BlackTreeIndependent security intelligence

Full vulnerability report · 2026

CVE-2026-53012High confidence

nexthop: fix IPv6 route referencing IPv4 nexthop

Linux · Linux

5.5MediumCVSS 3.1

Recommended action

Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

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 release	Source package	Vendor state	Fixed version	Evidence
Ubuntu 24.04 LTSnoble · standard archive	`linux`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-aws`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-azure`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-azure-fde`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-azure-nvidia`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-gcp`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-gke`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-gkeop`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-ibm`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-lowlatency`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-nvidia`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-nvidia-lowlatency`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-nvidia-tegra`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-oem-6.11`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-oracle`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-raspi`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-raspi-realtime`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-realtime`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-riscv`	Affected, 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 feed`	Canonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-xilinx`	Affected, 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 feed`	Canonical 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.

1 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: nexthop: fix IPv6 route referencing IPv4 nexthop syzbot reported a panic [1] [2]. When an IPv6 nexthop is replaced with an IPv4 nexthop, the has_v4 flag of all groups containing this nexthop is not updated. This is because nh_group_v4_update is only called when replacing AF_INET to AF_INET6, but the reverse direction (AF_INET6 to AF_INET) is missed. This allows a stale has_v4=false to bypass fib6_check_nexthop, causing IPv6 routes to be attached to groups that effectively contain only AF_INET members. Subsequent route lookups then call nexthop_fib6_nh() which returns NULL for the AF_INET member, leading to a NULL pointer dereference. Fix by calling nh_group_v4_update whenever the family changes, not just AF_INET to AF_INET6. Reproducer: # AF_INET6 blackhole ip -6 nexthop add id 1 blackhole # group with has_v4=false ip nexthop add id 100 group 1 # replace with AF_INET (no -6), has_v4 stays false ip nexthop replace id 1 blackhole # pass stale has_v4 check ip -6 route add 2001:db8::/64 nhid 100 # panic ping -6 2001:db8::1 [1] https://syzkaller.appspot.com/bug?id=e17283eb2f8dcf3dd9b47fe6f67a95f71faadad0 [2] https://syzkaller.appspot.com/bug?id=8699b6ae54c9f35837d925686208402949e12ef3
Remediation: Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.

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-2026-38880

No EUVD known-exploited evidence

In the Linux kernel, the following vulnerability has been resolved: nexthop: fix IPv6 route referencing IPv4 nexthop syzbot reported a panic [1] [2]. When an IPv6 nexthop is replaced with an IPv4 nexthop, the has_v4 flag of all groups containing this nexthop is not updated. This is because nh_group_v4_update is only called when replacing AF_INET to AF_INET6, but the reverse direction (AF_INET6 to AF_INET) is missed. This allows a stale has_v4=false to bypass fib6_check_nexthop, causing IPv6 routes to be attached to groups that effectively contain only AF_INET members. Subsequent route lookups then call nexthop_fib6_nh() which returns NULL for the AF_INET member, leading to a NULL pointer dereference. Fix by calling nh_group_v4_update whenever the family changes, not just AF_INET to AF_INET6. Reproducer: # AF_INET6 blackhole ip -6 nexthop add id 1 blackhole # group with has_v4=false ip nexthop add id 100 group 1 # replace with AF_INET (no -6), has_v4 stays false ip nexthop replace id 1 blackhole # pass stale has_v4 check ip -6 route add 2001:db8::/64 nhid 100 # panic ping -6 2001:db8::1 [1] https://syzkaller.appspot.com/bug?id=e17283eb2f8dcf3dd9b47fe6f67a95f71faadad0 [2] https://syzkaller.appspot.com/bug?id=8699b6ae54c9f35837d925686208402949e12ef3

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: 0.0
Advisory evidence: No linked advisory details stored yet

Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available

What, why and how

What

Why

The product dereferences a pointer that it expects to be valid but is NULL.

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

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

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 → NULL Pointer Dereference → 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-476 ↗
CWE-476: NULL Pointer Dereference. The product dereferences a pointer that it expects to be valid but is NULL.
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:N/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.CNoneConfidentiality impact: No direct loss is represented by this metric.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-476

Official authority intelligence

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

ENISA EUVD · EUVD-2026-38880Official EUVD mapping

Official EUVD record

BSI · German · WID-SEC-W-2026-2077Linux Kernel: Mehrere Schwachstellen

Ein entfernter Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um Sicherheitsvorkehrungen zu umgehen, einen Denial-of-Service-Zustand herbeizuführen und weitere, nicht näher spezifizierte Auswirkungen zu erzielen.

Official advisory

CERT-FR · French · CERTFR-2026-AVI-1091Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-52986 Référence CVE CVE-2026-52988 https://www.cve.org/CVERecord?id=CVE-2026-52988 Référence CVE CVE-2026-52991 https://www.cve.org/CVERecord?id=CVE-2026-52991 Référence CVE CVE-2026-52998 https://www.cve.org/CVERecord?id=CVE-2026-52998 Référence CVE CVE-2026-52999 https://www.cve.org/CVERecord?id=CVE-2026-52999 Référence CVE CVE-2026-53000 https://www.cve.org/CVERecord?id=CVE-2026-53000 Référence CVE CVE-2026-53002 https://www.cve.org/CVERecord?id=CVE-2026-53002 Référence CVE CVE-2026-53006 https://www.cve.org/CVERecord?id=CVE-2026-53006 Référence CVE CVE-2026-53011 https://www.cve.org/CVERecord?id=CVE-2026-53011 Référence CVE CVE-2026-53012 https://www.cve.org/CVERecord?id=CVE-2026-53012 Référence CVE CVE-2026-53032 https://www.cve.org/CVERecord?id=CVE-2026-53032 Référence CVE CVE-2026-53062 https://www.cve.org/CVERecord?id=CVE-2026-53062 Référence CVE CVE-2026-53063 https://www.cve.org/CVERecord?id=CVE-2026-53063 Référence CVE CVE-2026-53064 https://www.cve.org/CVERecord?id=CVE-2026-53064 Référence CVE CVE-2026-53069 https://www.cve.org/CVERecord?id=CVE-2026-53069 Référence CVE CVE-2026-53074 https://www.cve.org/CVERecord?id=CVE-2026-53074 Référence CVE CVE-2026-53083 https://www.cve.org/CVERecord?id=CVE-2026-53083 Référence CVE CVE-2026-53088 https://www.cve.org/CVERecord?id=

Official advisory

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

d?id=CVE-2026-52995 Référence CVE CVE-2026-52998 https://www.cve.org/CVERecord?id=CVE-2026-52998 Référence CVE CVE-2026-52999 https://www.cve.org/CVERecord?id=CVE-2026-52999 Référence CVE CVE-2026-53001 https://www.cve.org/CVERecord?id=CVE-2026-53001 Référence CVE CVE-2026-53002 https://www.cve.org/CVERecord?id=CVE-2026-53002 Référence CVE CVE-2026-53003 https://www.cve.org/CVERecord?id=CVE-2026-53003 Référence CVE CVE-2026-53004 https://www.cve.org/CVERecord?id=CVE-2026-53004 Référence CVE CVE-2026-53006 https://www.cve.org/CVERecord?id=CVE-2026-53006 Référence CVE CVE-2026-53011 https://www.cve.org/CVERecord?id=CVE-2026-53011 Référence CVE CVE-2026-53012 https://www.cve.org/CVERecord?id=CVE-2026-53012 Référence CVE CVE-2026-53016 https://www.cve.org/CVERecord?id=CVE-2026-53016 Référence CVE CVE-2026-53021 https://www.cve.org/CVERecord?id=CVE-2026-53021 Référence CVE CVE-2026-53022 https://www.cve.org/CVERecord?id=CVE-2026-53022 Référence CVE CVE-2026-53023 https://www.cve.org/CVERecord?id=CVE-2026-53023 Référence CVE CVE-2026-53037 https://www.cve.org/CVERecord?id=CVE-2026-53037 Référence CVE CVE-2026-53039 https://www.cve.org/CVERecord?id=CVE-2026-53039 Référence CVE CVE-2026-53040 https://www.cve.org/CVERecord?id=CVE-2026-53040 Référence CVE CVE-2026-53041 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-2026-52999 Référence CVE CVE-2026-53000 https://www.cve.org/CVERecord?id=CVE-2026-53000 Référence CVE CVE-2026-53002 https://www.cve.org/CVERecord?id=CVE-2026-53002 Référence CVE CVE-2026-53003 https://www.cve.org/CVERecord?id=CVE-2026-53003 Référence CVE CVE-2026-53004 https://www.cve.org/CVERecord?id=CVE-2026-53004 Référence CVE CVE-2026-53005 https://www.cve.org/CVERecord?id=CVE-2026-53005 Référence CVE CVE-2026-53006 https://www.cve.org/CVERecord?id=CVE-2026-53006 Référence CVE CVE-2026-53009 https://www.cve.org/CVERecord?id=CVE-2026-53009 Référence CVE CVE-2026-53011 https://www.cve.org/CVERecord?id=CVE-2026-53011 Référence CVE CVE-2026-53012 https://www.cve.org/CVERecord?id=CVE-2026-53012 Référence CVE CVE-2026-53013 https://www.cve.org/CVERecord?id=CVE-2026-53013 Référence CVE CVE-2026-53014 https://www.cve.org/CVERecord?id=CVE-2026-53014 Référence CVE CVE-2026-53016 https://www.cve.org/CVERecord?id=CVE-2026-53016 Référence CVE CVE-2026-53022 https://www.cve.org/CVERecord?id=CVE-2026-53022 Référence CVE CVE-2026-53032 https://www.cve.org/CVERecord?id=CVE-2026-53032 Référence CVE CVE-2026-53035 https://www.cve.org/CVERecord?id=CVE-2026-53035 Référence CVE CVE-2026-53037 https://www.cve.org/CVERecord?id=CVE-2026-53037 Référence CVE CVE-2026-53038 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-2026-53003 Référence CVE CVE-2026-53004 https://www.cve.org/CVERecord?id=CVE-2026-53004 Référence CVE CVE-2026-53005 https://www.cve.org/CVERecord?id=CVE-2026-53005 Référence CVE CVE-2026-53006 https://www.cve.org/CVERecord?id=CVE-2026-53006 Référence CVE CVE-2026-53007 https://www.cve.org/CVERecord?id=CVE-2026-53007 Référence CVE CVE-2026-53008 https://www.cve.org/CVERecord?id=CVE-2026-53008 Référence CVE CVE-2026-53009 https://www.cve.org/CVERecord?id=CVE-2026-53009 Référence CVE CVE-2026-53010 https://www.cve.org/CVERecord?id=CVE-2026-53010 Référence CVE CVE-2026-53011 https://www.cve.org/CVERecord?id=CVE-2026-53011 Référence CVE CVE-2026-53012 https://www.cve.org/CVERecord?id=CVE-2026-53012 Référence CVE CVE-2026-53013 https://www.cve.org/CVERecord?id=CVE-2026-53013 Référence CVE CVE-2026-53014 https://www.cve.org/CVERecord?id=CVE-2026-53014 Référence CVE CVE-2026-53015 https://www.cve.org/CVERecord?id=CVE-2026-53015 Référence CVE CVE-2026-53016 https://www.cve.org/CVERecord?id=CVE-2026-53016 Référence CVE CVE-2026-53017 https://www.cve.org/CVERecord?id=CVE-2026-53017 Référence CVE CVE-2026-53018 https://www.cve.org/CVERecord?id=CVE-2026-53018 Référence CVE CVE-2026-53019 https://www.cve.org/CVERecord?id=CVE-2026-53019 Référence CVE CVE-2026-53020 https://www.cve.org/CVERecord?id=

Official advisory

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

Official advisory

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

Official advisory

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

Official advisory

CERT-FR · French · CERTFR-2026-AVI-0866Multiples vulnérabilités dans Microsoft Azure Linux

u 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-52989 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-52993 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-52998 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-52999 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-53002 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-53003 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-53006 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-53011 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-53012 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-53013 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-53021 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-53022 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-53023 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-53032 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-53034 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-53035 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linux CVE-2026-53036 du 27 juin 2026 Bulletin de sécurité Microsoft Azure Linu

Official advisory

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

d?id=CVE-2026-52995 Référence CVE CVE-2026-52998 https://www.cve.org/CVERecord?id=CVE-2026-52998 Référence CVE CVE-2026-52999 https://www.cve.org/CVERecord?id=CVE-2026-52999 Référence CVE CVE-2026-53001 https://www.cve.org/CVERecord?id=CVE-2026-53001 Référence CVE CVE-2026-53002 https://www.cve.org/CVERecord?id=CVE-2026-53002 Référence CVE CVE-2026-53003 https://www.cve.org/CVERecord?id=CVE-2026-53003 Référence CVE CVE-2026-53004 https://www.cve.org/CVERecord?id=CVE-2026-53004 Référence CVE CVE-2026-53006 https://www.cve.org/CVERecord?id=CVE-2026-53006 Référence CVE CVE-2026-53011 https://www.cve.org/CVERecord?id=CVE-2026-53011 Référence CVE CVE-2026-53012 https://www.cve.org/CVERecord?id=CVE-2026-53012 Référence CVE CVE-2026-53016 https://www.cve.org/CVERecord?id=CVE-2026-53016 Référence CVE CVE-2026-53021 https://www.cve.org/CVERecord?id=CVE-2026-53021 Référence CVE CVE-2026-53022 https://www.cve.org/CVERecord?id=CVE-2026-53022 Référence CVE CVE-2026-53023 https://www.cve.org/CVERecord?id=CVE-2026-53023 Référence CVE CVE-2026-53033 https://www.cve.org/CVERecord?id=CVE-2026-53033 Référence CVE CVE-2026-53034 https://www.cve.org/CVERecord?id=CVE-2026-53034 Référence CVE CVE-2026-53035 https://www.cve.org/CVERecord?id=CVE-2026-53035 Référence CVE CVE-2026-53036 https://www.cve.org/CVERecord?id=

Official advisory

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: < 5.3; 5.10.258 ≤ 5.10.*; 5.15.209 ≤ 5.15.*; 6.1.175 ≤ 6.1.*; 6.6.141 ≤ 6.6.*; 6.12.91 ≤ 6.12.*; 6.18.33 ≤ 6.18.*; 7.0.10 ≤ 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.

Evidence and provenance

Published 24 Jun 2026 · Last source change 8 Sept 2026, 08:49 UTC · CWE-476 · NULL Pointer Dereference

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-2026-38880

Product sourceVendor CSAF · Siemens ProductCERT

Remediation sourceVendor CSAF · Siemens ProductCERT

CWE sourceNIST NVD

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.

2026-06-24CVE published

2026-09-08Fixed release or patch reference recorded

ENISA EUVD · EUVD-2026-38880↗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.

nexthop: fix IPv6 route referencing IPv4 nexthop

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

EUVD-2026-38880

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

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