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Full vulnerability report · 2026
CVE-2026-0966High confidence

Libssh: libssh: denial of service via zero-length input in ssh_get_hexa()

Red Hat · Red Hat Enterprise Linux 10

Official source articles: Red Hat RHSA-2026:7067 ↗ · Red Hat RHSA-2026:18160 ↗. Check the applicable product and release in the original source.

8.2HighCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

High technical severity; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 1 structured product or package state remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:High, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.58% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Red Hat Red Hat Enterprise Linux 10 and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 30 daysRemediation target: Within 180 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 1 structured product or package state remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Alpine, Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

6 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 1 affected package state shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

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.

Distribution releaseSource packageVendor stateFixed versionEvidence
Alpine v3.23v3.23 · communitylibsshVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.0.11.4-r0Alpine Security Database ↗Source updated 11 Sep 2026
Debian trixietrixie · sourcelibsshVendor fix publishedDebian records a fixed source-package version for this release.0.11.5-0+deb13u1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian bookwormbookworm · sourcelibsshAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 6 Oct 2026
Debian forkyforky · sourcelibsshVendor fix publishedDebian records a fixed source-package version for this release.0.12.0-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian sidsid · sourcelibsshVendor fix publishedDebian records a fixed source-package version for this release.0.12.0-1Debian Security Tracker ↗Source updated 6 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelibsshVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.0.10.6-2ubuntu0.3Canonical Ubuntu Security ↗Source updated 5 Oct 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
CVE-2026-0966 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitylibssh: libssh: Denial of Service via zero-length input in ssh_get_hexa()
6 known affected

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

  • libssh as a component of Red Hat Enterprise Linux 8
  • libssh-config as a component of Red Hat Enterprise Linux 8
  • libssh-devel as a component of Red Hat Enterprise Linux 8
  • libssh.src as a component of Red Hat Enterprise Linux 8
  • openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4
  • openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4
Summary
A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Optional official sources

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

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

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-2026-16330

No EUVD known-exploited evidence

A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.

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
6.5 · CVSS 3.0
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

High technical severity; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 1 structured product or package state remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.

What

A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.

Why

The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

What

A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.

Why

The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

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
a network path → Buffer Underwrite ('Buffer Underflow') → disrupt the affected service
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
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-124 ↗

CWE-124: Buffer Underwrite ('Buffer Underflow'). The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.

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

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

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing 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.ILowIntegrity impact: A successful attack can cause a limited loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedDenial of serviceCWE-124
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-16330Official EUVD mapping

A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.

Official EUVD record ↗
BSI · German · WID-SEC-2026-0446libssh: Mehrere Schwachstellen ermöglichen Manipulation von Dateien und DoS

Ein Angreifer kann mehrere Schwachstellen in libssh ausnutzen, um Dateien zu manipulieren oder um einen Denial-of-Service-Zustand zu verursachen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260401Security Bulletin 01 Apr 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 01 Apr 2026, published on 1 April 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1049Multiples vulnérabilités dans Oracle MySQL

ion des correctifs (cf. section Documentation). Documentation Bulletin de sécurité Oracle MySQL cspuaug2026 du 18 août 2026 https://www.oracle.com/security-alerts/cspuaug2026.html Référence CVE CVE-2025-13151 https://www.cve.org/CVERecord?id=CVE-2025-13151 Référence CVE CVE-2025-14821 https://www.cve.org/CVERecord?id=CVE-2025-14821 Référence CVE CVE-2025-68161 https://www.cve.org/CVERecord?id=CVE-2025-68161 Référence CVE CVE-2026-0540 https://www.cve.org/CVERecord?id=CVE-2026-0540 Référence CVE CVE-2026-0964 https://www.cve.org/CVERecord?id=CVE-2026-0964 Référence CVE CVE-2026-0965 https://www.cve.org/CVERecord?id=CVE-2026-0965 Référence CVE CVE-2026-0966 https://www.cve.org/CVERecord?id=CVE-2026-0966 Référence CVE CVE-2026-0967 https://www.cve.org/CVERecord?id=CVE-2026-0967 Référence CVE CVE-2026-0968 https://www.cve.org/CVERecord?id=CVE-2026-0968 Référence CVE CVE-2026-34477 https://www.cve.org/CVERecord?id=CVE-2026-34477 Référence CVE CVE-2026-34478 https://www.cve.org/CVERecord?id=CVE-2026-34478 Référence CVE CVE-2026-34479 https://www.cve.org/CVERecord?id=CVE-2026-34479 Référence CVE CVE-2026-34480 https://www.cve.org/CVERecord?id=CVE-2026-34480 Référence CVE CVE-2026-34481 https://www.cve.org/CVERecord?id=CVE-2026-34481 Référence CVE CVE-2026-41238 https://www.cve.org/CVERecord?id=CVE-2

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0386Multiples vulnérabilités dans les produits Microsoft

De multiples vulnérabilités ont été découvertes dans les produits Microsoft. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0326Multiples vulnérabilités dans les produits VMware

.cve.org/CVERecord?id=CVE-2025-8941 Référence CVE CVE-2025-9230 https://www.cve.org/CVERecord?id=CVE-2025-9230 Référence CVE CVE-2025-9231 https://www.cve.org/CVERecord?id=CVE-2025-9231 Référence CVE CVE-2025-9232 https://www.cve.org/CVERecord?id=CVE-2025-9232 Référence CVE CVE-2025-9301 https://www.cve.org/CVERecord?id=CVE-2025-9301 Référence CVE CVE-2025-9403 https://www.cve.org/CVERecord?id=CVE-2025-9403 Référence CVE CVE-2025-9820 https://www.cve.org/CVERecord?id=CVE-2025-9820 Référence CVE CVE-2026-0964 https://www.cve.org/CVERecord?id=CVE-2026-0964 Référence CVE CVE-2026-0965 https://www.cve.org/CVERecord?id=CVE-2026-0965 Référence CVE CVE-2026-0966 https://www.cve.org/CVERecord?id=CVE-2026-0966 Référence CVE CVE-2026-0967 https://www.cve.org/CVERecord?id=CVE-2026-0967 Référence CVE CVE-2026-0968 https://www.cve.org/CVERecord?id=CVE-2026-0968 Référence CVE CVE-2026-1002 https://www.cve.org/CVERecord?id=CVE-2026-1002 Référence CVE CVE-2026-1225 https://www.cve.org/CVERecord?id=CVE-2026-1225 Référence CVE CVE-2026-1299 https://www.cve.org/CVERecord?id=CVE-2026-1299 Référence CVE CVE-2026-1642 https://www.cve.org/CVERecord?id=CVE-2026-1642 Référence CVE CVE-2026-1703 https://www.cve.org/CVERecord?id=CVE-2026-1703 Référence CVE CVE-2026-1788 https://www.cve.org/CVERecord?id=CVE-2026-1788 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0316Multiples vulnérabilités dans les produits VMware

.cve.org/CVERecord?id=CVE-2025-8941 Référence CVE CVE-2025-9230 https://www.cve.org/CVERecord?id=CVE-2025-9230 Référence CVE CVE-2025-9231 https://www.cve.org/CVERecord?id=CVE-2025-9231 Référence CVE CVE-2025-9232 https://www.cve.org/CVERecord?id=CVE-2025-9232 Référence CVE CVE-2025-9301 https://www.cve.org/CVERecord?id=CVE-2025-9301 Référence CVE CVE-2025-9403 https://www.cve.org/CVERecord?id=CVE-2025-9403 Référence CVE CVE-2025-9820 https://www.cve.org/CVERecord?id=CVE-2025-9820 Référence CVE CVE-2026-0964 https://www.cve.org/CVERecord?id=CVE-2026-0964 Référence CVE CVE-2026-0965 https://www.cve.org/CVERecord?id=CVE-2026-0965 Référence CVE CVE-2026-0966 https://www.cve.org/CVERecord?id=CVE-2026-0966 Référence CVE CVE-2026-0967 https://www.cve.org/CVERecord?id=CVE-2026-0967 Référence CVE CVE-2026-0968 https://www.cve.org/CVERecord?id=CVE-2026-0968 Référence CVE CVE-2026-1229 https://www.cve.org/CVERecord?id=CVE-2026-1229 Référence CVE CVE-2026-1299 https://www.cve.org/CVERecord?id=CVE-2026-1299 Référence CVE CVE-2026-1642 https://www.cve.org/CVERecord?id=CVE-2026-1642 Référence CVE CVE-2026-1788 https://www.cve.org/CVERecord?id=CVE-2026-1788 Référence CVE CVE-2026-1965 https://www.cve.org/CVERecord?id=CVE-2026-1965 Référence CVE CVE-2026-21441 https://www.cve.org/CVERecord?id=CVE-2026-21441

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0209Multiples vulnérabilités dans les produits VMware

.cve.org/CVERecord?id=CVE-2025-8732 Référence CVE CVE-2025-8869 https://www.cve.org/CVERecord?id=CVE-2025-8869 Référence CVE CVE-2025-9820 https://www.cve.org/CVERecord?id=CVE-2025-9820 Référence CVE CVE-2026-0672 https://www.cve.org/CVERecord?id=CVE-2026-0672 Référence CVE CVE-2026-0861 https://www.cve.org/CVERecord?id=CVE-2026-0861 Référence CVE CVE-2026-0865 https://www.cve.org/CVERecord?id=CVE-2026-0865 Référence CVE CVE-2026-0915 https://www.cve.org/CVERecord?id=CVE-2026-0915 Référence CVE CVE-2026-0964 https://www.cve.org/CVERecord?id=CVE-2026-0964 Référence CVE CVE-2026-0965 https://www.cve.org/CVERecord?id=CVE-2026-0965 Référence CVE CVE-2026-0966 https://www.cve.org/CVERecord?id=CVE-2026-0966 Référence CVE CVE-2026-0967 https://www.cve.org/CVERecord?id=CVE-2026-0967 Référence CVE CVE-2026-0968 https://www.cve.org/CVERecord?id=CVE-2026-0968 Référence CVE CVE-2026-0988 https://www.cve.org/CVERecord?id=CVE-2026-0988 Référence CVE CVE-2026-0989 https://www.cve.org/CVERecord?id=CVE-2026-0989 Référence CVE CVE-2026-0990 https://www.cve.org/CVERecord?id=CVE-2026-0990 Référence CVE CVE-2026-0992 https://www.cve.org/CVERecord?id=CVE-2026-0992 Référence CVE CVE-2026-1225 https://www.cve.org/CVERecord?id=CVE-2026-1225 Référence CVE CVE-2026-1484 https://www.cve.org/CVERecord?id=CVE-2026-1484 Ré

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-013921libssh等の複数ベンダの製品におけるバッファアンダーフローの脆弱性

API関数ssh_get_hexa()は、長さ0の入力がこの関数に与えられた場合に脆弱性が発生します。この関数は内部的にssh_get_fingerprint_hash()および非推奨のssh_print_hexa()で使用されており、これらも同様に呼び出し元アプリケーションが長さを指定する入力に対して脆弱です。さらに、この関数はGSSAPI認証中にサーバーが受信したOIDをログに記録するためのgssapiコード内部でも使用されています。サーバーがGSSAPI認証を許可し、ログの詳細レベルが少なくともSSH_LOG_PACKET（3）に設定されている場合には、リモートからこの脆弱性を突くことが可能です。これにより、接続ごとのデーモンプロセスが自己DoS状態になる可能性があります。

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.
Fix availability varies by product
Affected
Fixed
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 26 Mar 2026 · Last source change 1 Sept 2026, 11:54 UTC · CWE-124 · Buffer Underwrite ('Buffer Underflow')

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-2026-16330
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
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 ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    libssh as a component of Red Hat Enterprise Linux 8; libssh-config as a component of Red Hat Enterprise Linux 8; libssh-devel as a component of Red Hat Enterprise Linux 8; libssh.src as a component of Red Hat Enterprise Linux 8; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: libssh-debuginfo-0:0.12.0-2.el10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debuginfo-0:0.12.0-2.el10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debuginfo-0:0.12.0-2.el10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debuginfo-0:0.12.0-2.el10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debugsource-0:0.12.0-2.el10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debugsource-0:0.12.0-2.el10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debugsource-0:0.12.0-2.el10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debugsource-0:0.12.0-2.el10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-devel-0:0.12.0-2.el10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-devel-0:0.12.0-2.el10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-devel-0:0.12.0-2.el10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-devel-0:0.12.0-2.el10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debuginfo-0:0.10.4-18.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debuginfo-0:0.10.4-18.el9.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debuginfo-0:0.10.4-18.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debuginfo-0:0.10.4-18.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debuginfo-0:0.10.4-18.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debugsource-0:0.10.4-18.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debugsource-0:0.10.4-18.el9.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debugsource-0:0.10.4-18.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debugsource-0:0.10.4-18.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debugsource-0:0.10.4-18.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-devel-0:0.10.4-18.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-devel-0:0.10.4-18.el9.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-devel-0:0.10.4-18.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-devel-0:0.10.4-18.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-devel-0:0.10.4-18.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-0:0.12.0-2.el10.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); libssh-0:0.12.0-2.el10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10); libssh-0:0.12.0-2.el10.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10); and 32 more
    After
    libssh as a component of Red Hat Enterprise Linux 8; libssh-config as a component of Red Hat Enterprise Linux 8; libssh-devel as a component of Red Hat Enterprise Linux 8; libssh.src as a component of Red Hat Enterprise Linux 8; openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: libssh-debuginfo-0:0.12.0-2.el10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debuginfo-0:0.12.0-2.el10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debuginfo-0:0.12.0-2.el10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debuginfo-0:0.12.0-2.el10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debugsource-0:0.12.0-2.el10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debugsource-0:0.12.0-2.el10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debugsource-0:0.12.0-2.el10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debugsource-0:0.12.0-2.el10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-devel-0:0.12.0-2.el10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-devel-0:0.12.0-2.el10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-devel-0:0.12.0-2.el10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-devel-0:0.12.0-2.el10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libssh-debuginfo-0:0.10.4-18.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debuginfo-0:0.10.4-18.el9.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debuginfo-0:0.10.4-18.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debuginfo-0:0.10.4-18.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debuginfo-0:0.10.4-18.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debugsource-0:0.10.4-18.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debugsource-0:0.10.4-18.el9.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debugsource-0:0.10.4-18.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debugsource-0:0.10.4-18.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-debugsource-0:0.10.4-18.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-devel-0:0.10.4-18.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-devel-0:0.10.4-18.el9.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-devel-0:0.10.4-18.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-devel-0:0.10.4-18.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-devel-0:0.10.4-18.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); libssh-0:0.12.0-2.el10.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); libssh-0:0.12.0-2.el10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10); libssh-0:0.12.0-2.el10.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10); and 32 more
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: 0:0.12.0-2.el10 < *; 0:0.10.4-18.el9 < *; 0.12.0-1.1.hum1 < *
    After
    See the vendor and CVE records for the affected range. · Fixed: Red Hat Enterprise Linux 10: 0:0.12.0-2.el10 < *; Red Hat Enterprise Linux 9: 0:0.10.4-18.el9 < *; Red Hat Hardened Images: 0.12.0-1.1.hum1 < *
    CNA ↗
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-2026-16330↗Mitigation reference↗Vendor advisory · Red Hat RHSA-2026:7067↗Vendor advisory↗CVE authority or vendor reference · Red Hat RHSA-2026:18160↗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-2026-0966 · cve.blacktree.nl