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Full vulnerability report · 2026
CVE-2026-46033High confidence

crypto: authencesn - reject short ahash digests during instance creation

Linux · Linux

7.1HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

20 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Ubuntu releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archivelinuxAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-awsAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azureAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azure-fdeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azure-nvidiaAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gcpAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gkeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gkeopAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-ibmAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-lowlatencyAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidiaAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidia-lowlatencyAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidia-tegraAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oem-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oracleAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspiAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspi-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-riscvAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-xilinxAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

2 current
SSA-019113 · CSAF 2.0 · revision 2 · interimSiemens ProductCERTSSA-019113: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.6
5 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= V3.1.6
  • SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= V3.1.6
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= V3.1.6
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= V3.1.6
  • SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= V3.1.6
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: authencesn - reject short ahash digests during instance creation authencesn requires either a zero authsize or an authsize of at least 4 bytes because the ESN encrypt/decrypt paths always move 4 bytes of high-order sequence number data at the end of the authenticated data. While crypto_authenc_esn_setauthsize() already rejects explicit non-zero authsizes in the range 1..3, crypto_authenc_esn_create() still copied auth->digestsize into inst->alg.maxauthsize without validating it. The AEAD core then initialized the tfm's default authsize from that value. As a result, selecting an ahash with digest size 1..3, such as cbcmac(cipher_null), exposed authencesn instances whose default authsize was invalid even though setauthsize() would have rejected the same value. AF_ALG could then trigger the ESN tail handling with a too-short tag and hit an out-of-bounds access. Reject authencesn instances whose ahash digest size is in the invalid non-zero range 1..3 so that no tfm can inherit an unsupported default authsize.
Remediation
Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.
CVE-2026-46033 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitykernel: crypto: authencesn - reject short ahash digests during instance creation
232 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • kernel as a component of Red Hat Enterprise Linux 10
  • kernel-64k as a component of Red Hat Enterprise Linux 10
  • kernel-64k-core as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-core as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-devel as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-devel-matched as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-modules as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-modules-core as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-modules-extra as a component of Red Hat Enterprise Linux 10
  • kernel-64k-devel as a component of Red Hat Enterprise Linux 10
  • kernel-64k-devel-matched as a component of Red Hat Enterprise Linux 10
Summary
A flaw was found in the Linux kernel's `authencesn` cryptographic module. This vulnerability arises from insufficient validation of cryptographic digest sizes during the creation of new instances. A local attacker could exploit this by providing a malformed input, leading to an out-of-bounds memory access. This could cause system instability, a denial of service (DoS), or potentially enable unauthorized access to sensitive information or system control.
Remediation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-32414

No EUVD known-exploited evidence

In the Linux kernel, the following vulnerability has been resolved: crypto: authencesn - reject short ahash digests during instance creation authencesn requires either a zero authsize or an authsize of at least 4 bytes because the ESN encrypt/decrypt paths always move 4 bytes of high-order sequence number data at the end of the authenticated data. While crypto_authenc_esn_setauthsize() already rejects explicit non-zero authsizes in the range 1..3, crypto_authenc_esn_create() still copied auth->digestsize into inst->alg.maxauthsize without validating it. The AEAD core then initialized the tfm's default authsize from that value. As a result, selecting an ahash with digest size 1..3, such as cbcmac(cipher_null), exposed authencesn instances whose default authsize was invalid even though setauthsize() would have rejected the same value. AF_ALG could then trigger the ESN tail handling with a too-short tag and hit an out-of-bounds access. Reject authencesn instances whose ahash digest size is in the invalid non-zero range 1..3 so that no tfm can inherit an unsupported default authsize.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
7.1 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

In the Linux kernel, the following vulnerability has been resolved: crypto: authencesn - reject short ahash digests during instance creation authencesn requires either a zero authsize or an authsize of at least 4 bytes because the ESN encrypt/decrypt paths always move 4 bytes of high-order sequence number data at the end of the authenticated data. While crypto_authenc_esn_setauthsize() already rejects explicit non-zero authsizes in the range 1..3, crypto_authenc_esn_create() still copied auth->digestsize into inst->alg.maxauthsize without validating it. The AEAD core then initialized the tfm's default authsize from that value. As a result, selecting an ahash with digest size 1..3, such as cbcmac(cipher_null), exposed authencesn instances whose default authsize was invalid even though setauthsize() would have rejected the same value. AF_ALG could then trigger the ESN tail handling with a too-short tag and hit an out-of-bounds access. Reject authencesn instances whose ahash digest size is in the invalid non-zero range 1..3 so that no tfm can inherit an unsupported default authsize.

What

In the Linux kernel, the following vulnerability has been resolved: crypto: authencesn - reject short ahash digests during instance creation authencesn requires either a zero authsize or an authsize of at least 4 bytes because the ESN encrypt/decrypt paths always move 4 bytes of high-order sequence number data at the end of the authenticated data. While crypto_authenc_esn_setauthsize() already rejects explicit non-zero authsizes in the range 1..3, crypto_authenc_esn_create() still copied auth->digestsize into inst->alg.maxauthsize without validating it. The AEAD core then initialized the tfm's default authsize from that value. As a result, selecting an ahash with digest size 1..3, such as cbcmac(cipher_null), exposed authencesn instances whose default authsize was invalid even though setauthsize() would have rejected the same value. AF_ALG could then trigger the ESN tail handling with a too-short tag and hit an out-of-bounds access. Reject authencesn instances whose ahash digest size is in the invalid non-zero range 1..3 so that no tfm can inherit an unsupported default authsize.

Why

The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

In the Linux kernel, the following vulnerability has been resolved: crypto: authencesn - reject short ahash digests during instance creation authencesn requires either a zero authsize or an authsize of at least 4 bytes because the ESN encrypt/decrypt paths always move 4 bytes of high-order sequence number data at the end of the authenticated data. While crypto_authenc_esn_setauthsize() already rejects explicit non-zero authsizes in the range 1..3, crypto_authenc_esn_create() still copied auth->digestsize into inst->alg.maxauthsize without validating it. The AEAD core then initialized the tfm's default authsize from that value. As a result, selecting an ahash with digest size 1..3, such as cbcmac(cipher_null), exposed authencesn instances whose default authsize was invalid even though setauthsize() would have rejected the same value. AF_ALG could then trigger the ESN tail handling with a too-short tag and hit an out-of-bounds access. Reject authencesn instances whose ahash digest size is in the invalid non-zero range 1..3 so that no tfm can inherit an unsupported default authsize.

Why

The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Improper Validation of Specified Quantity in Input → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-1284 ↗

CWE-1284: Improper Validation of Specified Quantity in Input. The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
CWE-1284
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-32414Official EUVD mapping

In the Linux kernel, the following vulnerability has been resolved: crypto: authencesn - reject short ahash digests during instance creation authencesn requires either a zero authsize or an authsize of at least 4 bytes because the ESN encrypt/decrypt paths always move 4 bytes of high-order sequence number data at the end of the authenticated data. While crypto_authenc_esn_setauthsize() already rejects explicit non-zero authsizes in the range 1..3, crypto_authenc_esn_create() still copied auth->digestsize into inst->alg.maxauthsize without validating it. The AEAD core then initialized the tfm's default authsize from that value. As a result, selecting an ahash with digest size 1..3, such as cbcmac(cipher_null), exposed authencesn instances whose default authsize was invalid even though setauthsize() would have rejected the same value. AF_ALG could then trigger the ESN tail handling with a too-short tag and hit an out-of-bounds access. Reject authencesn instances whose ahash digest size is in the invalid non-zero range 1..3 so that no tfm can inherit an unsupported default authsize.

Official EUVD record
BSI · German · WID-SEC-W-2026-1700Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder andere nicht näher spezifizierte Auswirkungen zu erzielen.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-1093Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-46006 Référence CVE CVE-2026-46009 https://www.cve.org/CVERecord?id=CVE-2026-46009 Référence CVE CVE-2026-46015 https://www.cve.org/CVERecord?id=CVE-2026-46015 Référence CVE CVE-2026-46018 https://www.cve.org/CVERecord?id=CVE-2026-46018 Référence CVE CVE-2026-46019 https://www.cve.org/CVERecord?id=CVE-2026-46019 Référence CVE CVE-2026-46022 https://www.cve.org/CVERecord?id=CVE-2026-46022 Référence CVE CVE-2026-46023 https://www.cve.org/CVERecord?id=CVE-2026-46023 Référence CVE CVE-2026-46024 https://www.cve.org/CVERecord?id=CVE-2026-46024 Référence CVE CVE-2026-46027 https://www.cve.org/CVERecord?id=CVE-2026-46027 Référence CVE CVE-2026-46033 https://www.cve.org/CVERecord?id=CVE-2026-46033 Référence CVE CVE-2026-46037 https://www.cve.org/CVERecord?id=CVE-2026-46037 Référence CVE CVE-2026-46040 https://www.cve.org/CVERecord?id=CVE-2026-46040 Référence CVE CVE-2026-46043 https://www.cve.org/CVERecord?id=CVE-2026-46043 Référence CVE CVE-2026-46044 https://www.cve.org/CVERecord?id=CVE-2026-46044 Référence CVE CVE-2026-46046 https://www.cve.org/CVERecord?id=CVE-2026-46046 Référence CVE CVE-2026-46047 https://www.cve.org/CVERecord?id=CVE-2026-46047 Référence CVE CVE-2026-46049 https://www.cve.org/CVERecord?id=CVE-2026-46049 Référence CVE CVE-2026-46050 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-1064Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-46009 Référence CVE CVE-2026-46011 https://www.cve.org/CVERecord?id=CVE-2026-46011 Référence CVE CVE-2026-46015 https://www.cve.org/CVERecord?id=CVE-2026-46015 Référence CVE CVE-2026-46016 https://www.cve.org/CVERecord?id=CVE-2026-46016 Référence CVE CVE-2026-46018 https://www.cve.org/CVERecord?id=CVE-2026-46018 Référence CVE CVE-2026-46019 https://www.cve.org/CVERecord?id=CVE-2026-46019 Référence CVE CVE-2026-46023 https://www.cve.org/CVERecord?id=CVE-2026-46023 Référence CVE CVE-2026-46026 https://www.cve.org/CVERecord?id=CVE-2026-46026 Référence CVE CVE-2026-46027 https://www.cve.org/CVERecord?id=CVE-2026-46027 Référence CVE CVE-2026-46033 https://www.cve.org/CVERecord?id=CVE-2026-46033 Référence CVE CVE-2026-46034 https://www.cve.org/CVERecord?id=CVE-2026-46034 Référence CVE CVE-2026-46036 https://www.cve.org/CVERecord?id=CVE-2026-46036 Référence CVE CVE-2026-46038 https://www.cve.org/CVERecord?id=CVE-2026-46038 Référence CVE CVE-2026-46040 https://www.cve.org/CVERecord?id=CVE-2026-46040 Référence CVE CVE-2026-46048 https://www.cve.org/CVERecord?id=CVE-2026-46048 Référence CVE CVE-2026-46049 https://www.cve.org/CVERecord?id=CVE-2026-46049 Référence CVE CVE-2026-46056 https://www.cve.org/CVERecord?id=CVE-2026-46056 Référence CVE CVE-2026-46058 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-1066Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-46018 Référence CVE CVE-2026-46019 https://www.cve.org/CVERecord?id=CVE-2026-46019 Référence CVE CVE-2026-46021 https://www.cve.org/CVERecord?id=CVE-2026-46021 Référence CVE CVE-2026-46022 https://www.cve.org/CVERecord?id=CVE-2026-46022 Référence CVE CVE-2026-46023 https://www.cve.org/CVERecord?id=CVE-2026-46023 Référence CVE CVE-2026-46024 https://www.cve.org/CVERecord?id=CVE-2026-46024 Référence CVE CVE-2026-46026 https://www.cve.org/CVERecord?id=CVE-2026-46026 Référence CVE CVE-2026-46027 https://www.cve.org/CVERecord?id=CVE-2026-46027 Référence CVE CVE-2026-46031 https://www.cve.org/CVERecord?id=CVE-2026-46031 Référence CVE CVE-2026-46033 https://www.cve.org/CVERecord?id=CVE-2026-46033 Référence CVE CVE-2026-46037 https://www.cve.org/CVERecord?id=CVE-2026-46037 Référence CVE CVE-2026-46038 https://www.cve.org/CVERecord?id=CVE-2026-46038 Référence CVE CVE-2026-46040 https://www.cve.org/CVERecord?id=CVE-2026-46040 Référence CVE CVE-2026-46041 https://www.cve.org/CVERecord?id=CVE-2026-46041 Référence CVE CVE-2026-46044 https://www.cve.org/CVERecord?id=CVE-2026-46044 Référence CVE CVE-2026-46046 https://www.cve.org/CVERecord?id=CVE-2026-46046 Référence CVE CVE-2026-46047 https://www.cve.org/CVERecord?id=CVE-2026-46047 Référence CVE CVE-2026-46049 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-1029Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-45920 Référence CVE CVE-2026-45923 https://www.cve.org/CVERecord?id=CVE-2026-45923 Référence CVE CVE-2026-45981 https://www.cve.org/CVERecord?id=CVE-2026-45981 Référence CVE CVE-2026-45985 https://www.cve.org/CVERecord?id=CVE-2026-45985 Référence CVE CVE-2026-45994 https://www.cve.org/CVERecord?id=CVE-2026-45994 Référence CVE CVE-2026-45997 https://www.cve.org/CVERecord?id=CVE-2026-45997 Référence CVE CVE-2026-46018 https://www.cve.org/CVERecord?id=CVE-2026-46018 Référence CVE CVE-2026-46023 https://www.cve.org/CVERecord?id=CVE-2026-46023 Référence CVE CVE-2026-46027 https://www.cve.org/CVERecord?id=CVE-2026-46027 Référence CVE CVE-2026-46033 https://www.cve.org/CVERecord?id=CVE-2026-46033 Référence CVE CVE-2026-46040 https://www.cve.org/CVERecord?id=CVE-2026-46040 Référence CVE CVE-2026-46049 https://www.cve.org/CVERecord?id=CVE-2026-46049 Référence CVE CVE-2026-46051 https://www.cve.org/CVERecord?id=CVE-2026-46051 Référence CVE CVE-2026-46052 https://www.cve.org/CVERecord?id=CVE-2026-46052 Référence CVE CVE-2026-46056 https://www.cve.org/CVERecord?id=CVE-2026-46056 Référence CVE CVE-2026-46064 https://www.cve.org/CVERecord?id=CVE-2026-46064 Référence CVE CVE-2026-46068 https://www.cve.org/CVERecord?id=CVE-2026-46068 Référence CVE CVE-2026-46080 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0985Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-46006 Référence CVE CVE-2026-46009 https://www.cve.org/CVERecord?id=CVE-2026-46009 Référence CVE CVE-2026-46015 https://www.cve.org/CVERecord?id=CVE-2026-46015 Référence CVE CVE-2026-46018 https://www.cve.org/CVERecord?id=CVE-2026-46018 Référence CVE CVE-2026-46019 https://www.cve.org/CVERecord?id=CVE-2026-46019 Référence CVE CVE-2026-46022 https://www.cve.org/CVERecord?id=CVE-2026-46022 Référence CVE CVE-2026-46023 https://www.cve.org/CVERecord?id=CVE-2026-46023 Référence CVE CVE-2026-46024 https://www.cve.org/CVERecord?id=CVE-2026-46024 Référence CVE CVE-2026-46027 https://www.cve.org/CVERecord?id=CVE-2026-46027 Référence CVE CVE-2026-46033 https://www.cve.org/CVERecord?id=CVE-2026-46033 Référence CVE CVE-2026-46037 https://www.cve.org/CVERecord?id=CVE-2026-46037 Référence CVE CVE-2026-46040 https://www.cve.org/CVERecord?id=CVE-2026-46040 Référence CVE CVE-2026-46044 https://www.cve.org/CVERecord?id=CVE-2026-46044 Référence CVE CVE-2026-46046 https://www.cve.org/CVERecord?id=CVE-2026-46046 Référence CVE CVE-2026-46047 https://www.cve.org/CVERecord?id=CVE-2026-46047 Référence CVE CVE-2026-46049 https://www.cve.org/CVERecord?id=CVE-2026-46049 Référence CVE CVE-2026-46050 https://www.cve.org/CVERecord?id=CVE-2026-46050 Référence CVE CVE-2026-46051 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0954Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-46024 Référence CVE CVE-2026-46025 https://www.cve.org/CVERecord?id=CVE-2026-46025 Référence CVE CVE-2026-46026 https://www.cve.org/CVERecord?id=CVE-2026-46026 Référence CVE CVE-2026-46027 https://www.cve.org/CVERecord?id=CVE-2026-46027 Référence CVE CVE-2026-46028 https://www.cve.org/CVERecord?id=CVE-2026-46028 Référence CVE CVE-2026-46029 https://www.cve.org/CVERecord?id=CVE-2026-46029 Référence CVE CVE-2026-46030 https://www.cve.org/CVERecord?id=CVE-2026-46030 Référence CVE CVE-2026-46031 https://www.cve.org/CVERecord?id=CVE-2026-46031 Référence CVE CVE-2026-46032 https://www.cve.org/CVERecord?id=CVE-2026-46032 Référence CVE CVE-2026-46033 https://www.cve.org/CVERecord?id=CVE-2026-46033 Référence CVE CVE-2026-46034 https://www.cve.org/CVERecord?id=CVE-2026-46034 Référence CVE CVE-2026-46035 https://www.cve.org/CVERecord?id=CVE-2026-46035 Référence CVE CVE-2026-46036 https://www.cve.org/CVERecord?id=CVE-2026-46036 Référence CVE CVE-2026-46037 https://www.cve.org/CVERecord?id=CVE-2026-46037 Référence CVE CVE-2026-46038 https://www.cve.org/CVERecord?id=CVE-2026-46038 Référence CVE CVE-2026-46039 https://www.cve.org/CVERecord?id=CVE-2026-46039 Référence CVE CVE-2026-46040 https://www.cve.org/CVERecord?id=CVE-2026-46040 Référence CVE CVE-2026-46041 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0926Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-46024 Référence CVE CVE-2026-46025 https://www.cve.org/CVERecord?id=CVE-2026-46025 Référence CVE CVE-2026-46026 https://www.cve.org/CVERecord?id=CVE-2026-46026 Référence CVE CVE-2026-46027 https://www.cve.org/CVERecord?id=CVE-2026-46027 Référence CVE CVE-2026-46028 https://www.cve.org/CVERecord?id=CVE-2026-46028 Référence CVE CVE-2026-46029 https://www.cve.org/CVERecord?id=CVE-2026-46029 Référence CVE CVE-2026-46030 https://www.cve.org/CVERecord?id=CVE-2026-46030 Référence CVE CVE-2026-46031 https://www.cve.org/CVERecord?id=CVE-2026-46031 Référence CVE CVE-2026-46032 https://www.cve.org/CVERecord?id=CVE-2026-46032 Référence CVE CVE-2026-46033 https://www.cve.org/CVERecord?id=CVE-2026-46033 Référence CVE CVE-2026-46034 https://www.cve.org/CVERecord?id=CVE-2026-46034 Référence CVE CVE-2026-46035 https://www.cve.org/CVERecord?id=CVE-2026-46035 Référence CVE CVE-2026-46036 https://www.cve.org/CVERecord?id=CVE-2026-46036 Référence CVE CVE-2026-46037 https://www.cve.org/CVERecord?id=CVE-2026-46037 Référence CVE CVE-2026-46038 https://www.cve.org/CVERecord?id=CVE-2026-46038 Référence CVE CVE-2026-46039 https://www.cve.org/CVERecord?id=CVE-2026-46039 Référence CVE CVE-2026-46040 https://www.cve.org/CVERecord?id=CVE-2026-46040 Référence CVE CVE-2026-46041 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0927Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-46006 Référence CVE CVE-2026-46009 https://www.cve.org/CVERecord?id=CVE-2026-46009 Référence CVE CVE-2026-46011 https://www.cve.org/CVERecord?id=CVE-2026-46011 Référence CVE CVE-2026-46016 https://www.cve.org/CVERecord?id=CVE-2026-46016 Référence CVE CVE-2026-46018 https://www.cve.org/CVERecord?id=CVE-2026-46018 Référence CVE CVE-2026-46019 https://www.cve.org/CVERecord?id=CVE-2026-46019 Référence CVE CVE-2026-46023 https://www.cve.org/CVERecord?id=CVE-2026-46023 Référence CVE CVE-2026-46024 https://www.cve.org/CVERecord?id=CVE-2026-46024 Référence CVE CVE-2026-46027 https://www.cve.org/CVERecord?id=CVE-2026-46027 Référence CVE CVE-2026-46033 https://www.cve.org/CVERecord?id=CVE-2026-46033 Référence CVE CVE-2026-46037 https://www.cve.org/CVERecord?id=CVE-2026-46037 Référence CVE CVE-2026-46040 https://www.cve.org/CVERecord?id=CVE-2026-46040 Référence CVE CVE-2026-46046 https://www.cve.org/CVERecord?id=CVE-2026-46046 Référence CVE CVE-2026-46048 https://www.cve.org/CVERecord?id=CVE-2026-46048 Référence CVE CVE-2026-46049 https://www.cve.org/CVERecord?id=CVE-2026-46049 Référence CVE CVE-2026-46050 https://www.cve.org/CVERecord?id=CVE-2026-46050 Référence CVE CVE-2026-46051 https://www.cve.org/CVERecord?id=CVE-2026-46051 Référence CVE CVE-2026-46052 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0862Multiples vulnérabilités dans le noyau Linux de Debian LTS

d?id=CVE-2026-46018 Référence CVE CVE-2026-46019 https://www.cve.org/CVERecord?id=CVE-2026-46019 Référence CVE CVE-2026-46021 https://www.cve.org/CVERecord?id=CVE-2026-46021 Référence CVE CVE-2026-46022 https://www.cve.org/CVERecord?id=CVE-2026-46022 Référence CVE CVE-2026-46023 https://www.cve.org/CVERecord?id=CVE-2026-46023 Référence CVE CVE-2026-46024 https://www.cve.org/CVERecord?id=CVE-2026-46024 Référence CVE CVE-2026-46026 https://www.cve.org/CVERecord?id=CVE-2026-46026 Référence CVE CVE-2026-46027 https://www.cve.org/CVERecord?id=CVE-2026-46027 Référence CVE CVE-2026-46031 https://www.cve.org/CVERecord?id=CVE-2026-46031 Référence CVE CVE-2026-46033 https://www.cve.org/CVERecord?id=CVE-2026-46033 Référence CVE CVE-2026-46037 https://www.cve.org/CVERecord?id=CVE-2026-46037 Référence CVE CVE-2026-46038 https://www.cve.org/CVERecord?id=CVE-2026-46038 Référence CVE CVE-2026-46040 https://www.cve.org/CVERecord?id=CVE-2026-46040 Référence CVE CVE-2026-46043 https://www.cve.org/CVERecord?id=CVE-2026-46043 Référence CVE CVE-2026-46044 https://www.cve.org/CVERecord?id=CVE-2026-46044 Référence CVE CVE-2026-46046 https://www.cve.org/CVERecord?id=CVE-2026-46046 Référence CVE CVE-2026-46047 https://www.cve.org/CVERecord?id=CVE-2026-46047 Référence CVE CVE-2026-46049 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0861Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-46024 Référence CVE CVE-2026-46025 https://www.cve.org/CVERecord?id=CVE-2026-46025 Référence CVE CVE-2026-46026 https://www.cve.org/CVERecord?id=CVE-2026-46026 Référence CVE CVE-2026-46027 https://www.cve.org/CVERecord?id=CVE-2026-46027 Référence CVE CVE-2026-46028 https://www.cve.org/CVERecord?id=CVE-2026-46028 Référence CVE CVE-2026-46029 https://www.cve.org/CVERecord?id=CVE-2026-46029 Référence CVE CVE-2026-46030 https://www.cve.org/CVERecord?id=CVE-2026-46030 Référence CVE CVE-2026-46031 https://www.cve.org/CVERecord?id=CVE-2026-46031 Référence CVE CVE-2026-46032 https://www.cve.org/CVERecord?id=CVE-2026-46032 Référence CVE CVE-2026-46033 https://www.cve.org/CVERecord?id=CVE-2026-46033 Référence CVE CVE-2026-46034 https://www.cve.org/CVERecord?id=CVE-2026-46034 Référence CVE CVE-2026-46035 https://www.cve.org/CVERecord?id=CVE-2026-46035 Référence CVE CVE-2026-46036 https://www.cve.org/CVERecord?id=CVE-2026-46036 Référence CVE CVE-2026-46037 https://www.cve.org/CVERecord?id=CVE-2026-46037 Référence CVE CVE-2026-46038 https://www.cve.org/CVERecord?id=CVE-2026-46038 Référence CVE CVE-2026-46039 https://www.cve.org/CVERecord?id=CVE-2026-46039 Référence CVE CVE-2026-46040 https://www.cve.org/CVERecord?id=CVE-2026-46040 Référence CVE CVE-2026-46041 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0831Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-46024 Référence CVE CVE-2026-46025 https://www.cve.org/CVERecord?id=CVE-2026-46025 Référence CVE CVE-2026-46026 https://www.cve.org/CVERecord?id=CVE-2026-46026 Référence CVE CVE-2026-46027 https://www.cve.org/CVERecord?id=CVE-2026-46027 Référence CVE CVE-2026-46028 https://www.cve.org/CVERecord?id=CVE-2026-46028 Référence CVE CVE-2026-46029 https://www.cve.org/CVERecord?id=CVE-2026-46029 Référence CVE CVE-2026-46030 https://www.cve.org/CVERecord?id=CVE-2026-46030 Référence CVE CVE-2026-46031 https://www.cve.org/CVERecord?id=CVE-2026-46031 Référence CVE CVE-2026-46032 https://www.cve.org/CVERecord?id=CVE-2026-46032 Référence CVE CVE-2026-46033 https://www.cve.org/CVERecord?id=CVE-2026-46033 Référence CVE CVE-2026-46034 https://www.cve.org/CVERecord?id=CVE-2026-46034 Référence CVE CVE-2026-46035 https://www.cve.org/CVERecord?id=CVE-2026-46035 Référence CVE CVE-2026-46036 https://www.cve.org/CVERecord?id=CVE-2026-46036 Référence CVE CVE-2026-46037 https://www.cve.org/CVERecord?id=CVE-2026-46037 Référence CVE CVE-2026-46038 https://www.cve.org/CVERecord?id=CVE-2026-46038 Référence CVE CVE-2026-46039 https://www.cve.org/CVERecord?id=CVE-2026-46039 Référence CVE CVE-2026-46040 https://www.cve.org/CVERecord?id=CVE-2026-46040 Référence CVE CVE-2026-46041 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0731Multiples vulnérabilités dans les produits Microsoft

mai 2026 Bulletin de sécurité Microsoft CVE-2026-46016 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46018 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46019 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46021 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46022 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46023 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46024 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46026 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46027 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46031 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46033 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46037 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46038 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46040 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46043 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46046 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46047 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46048 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46049 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46050 du 28 mai 2026 Bulletin de sécurité Microsoft CVE-2026-46051 du 28 mai 2026 Bulletin de sécurité Mic

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= V3.1.6; SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= V3.1.6; SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= V3.1.6; SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= V3.1.6; SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= V3.1.6
Fixed
< 4.11; 5.10.258 ≤ 5.10.*; 5.15.209 ≤ 5.15.*; 6.1.175 ≤ 6.1.*; 6.6.140 ≤ 6.6.*; 6.12.86 ≤ 6.12.*; 6.18.27 ≤ 6.18.*; 7.0.4 ≤ 7.0.*
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.
04

Evidence and provenance

Published 27 May 2026 · Last source change 8 Sept 2026, 08:49 UTC · CWE-1284 · Improper Validation of Specified Quantity in Input

CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-32414
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceOther authority
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2026-32414↗Vendor CSAF · Siemens ProductCERT↗CVE authority or vendor reference↗Patch or update reference↗Patch or update reference↗Patch or update reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-46033 · cve.blacktree.nl