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Full vulnerability report · 2026
CVE-2026-35388High confidence

OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions

OpenBSD · OpenSSH

2.5LowCVSS 3.1
Recommended action
Scheduled

Low 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.

2 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 archiveopensshVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.1:9.6p1-3ubuntu13.16Canonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archiveopenssh-ssh1Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical record ↗Source updated 11 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
CVE-2026-35388 · CSAF 2.0 · revision 3 · finalRed Hat Product SecurityOpenSSH: OpenSSH: Low integrity impact from unconfirmed proxy-mode multiplexing sessions
19 known affected

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

  • openssh as a component of Red Hat Enterprise Linux 6
  • openssh-askpass as a component of Red Hat Enterprise Linux 6
  • openssh-clients as a component of Red Hat Enterprise Linux 6
  • openssh-ldap as a component of Red Hat Enterprise Linux 6
  • openssh-server as a component of Red Hat Enterprise Linux 6
  • openssh.src as a component of Red Hat Enterprise Linux 6
  • pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 6
  • openssh as a component of Red Hat Enterprise Linux 7
  • openssh-askpass as a component of Red Hat Enterprise Linux 7
  • openssh-cavs as a component of Red Hat Enterprise Linux 7
  • openssh-clients as a component of Red Hat Enterprise Linux 7
  • openssh-keycat as a component of Red Hat Enterprise Linux 7
Summary
A flaw was found in OpenSSH. This vulnerability allows for a low integrity impact due to the omission of connection multiplexing confirmation for proxy-mode multiplexing sessions. A local user, under specific and complex conditions requiring user interaction, could potentially establish a multiplexed session without explicit confirmation, leading to unintended data handling.
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.

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-2026-18404

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

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
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

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

Patch available
01

What, why and how

OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.

What

OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.

Why

The product protects a primary channel, but it does not use the same level of protection for an alternate channel.

How

An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.

Why

The product protects a primary channel, but it does not use the same level of protection for an alternate channel.

How

An attacker operating through local access may attempt exploitation without authentication after a user interaction. 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 → Unprotected Alternate Channel → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
High: exploitation depends on specific conditions
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-420 ↗

CWE-420: Unprotected Alternate Channel. The product protects a primary channel, but it does not use the same level of protection for an alternate channel.

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:H/PR:N/UI:R/S:U/C:N/I:L/A:N

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.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.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.ANoneAvailability impact: No direct loss is represented by this metric.
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.
UnauthenticatedCWE-420
A

Official authority intelligence

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

BSI · German · WID-SEC-2026-2253IBM Security Verify Access: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in IBM Security Verify Access ausnutzen, um erweiterte Berechtigungen zu erlangen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, sensible Informationen offenzulegen und andere, nicht näher bezeichnete Angriffe durchzuführen.

Official advisory ↗
BSI · German · WID-SEC-2026-1666IBM QRadar SIEM: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um beliebigen Programmcode auszuführen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, und um Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
BSI · German · WID-SEC-2026-0979OpenSSH: Mehrere Schwachstellen

Ein entfernter Angreifer kann mehrere Schwachstellen in OpenSSH ausnutzen, um Code auszuführen, Privilegien zu erhöhen, Sicherheitsmechanismen zu umgehen oder nicht näher spezifizierte Auswirkungen zu erzielen.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0667Multiples vulnérabilités dans les produits IBM

d?id=CVE-2026-34197 Référence CVE CVE-2026-34268 https://www.cve.org/CVERecord?id=CVE-2026-34268 Référence CVE CVE-2026-34282 https://www.cve.org/CVERecord?id=CVE-2026-34282 Référence CVE CVE-2026-34601 https://www.cve.org/CVERecord?id=CVE-2026-34601 Référence CVE CVE-2026-34982 https://www.cve.org/CVERecord?id=CVE-2026-34982 Référence CVE CVE-2026-35213 https://www.cve.org/CVERecord?id=CVE-2026-35213 Référence CVE CVE-2026-35385 https://www.cve.org/CVERecord?id=CVE-2026-35385 Référence CVE CVE-2026-35386 https://www.cve.org/CVERecord?id=CVE-2026-35386 Référence CVE CVE-2026-35387 https://www.cve.org/CVERecord?id=CVE-2026-35387 Référence CVE CVE-2026-35388 https://www.cve.org/CVERecord?id=CVE-2026-35388 Référence CVE CVE-2026-35414 https://www.cve.org/CVERecord?id=CVE-2026-35414 Référence CVE CVE-2026-35535 https://www.cve.org/CVERecord?id=CVE-2026-35535 Référence CVE CVE-2026-39373 https://www.cve.org/CVERecord?id=CVE-2026-39373 Référence CVE CVE-2026-39983 https://www.cve.org/CVERecord?id=CVE-2026-39983 Référence CVE CVE-2026-40175 https://www.cve.org/CVERecord?id=CVE-2026-40175 Référence CVE CVE-2026-40466 https://www.cve.org/CVERecord?id=CVE-2026-40466 Référence CVE CVE-2026-40973 https://www.cve.org/CVERecord?id=CVE-2026-40973 Référence CVE CVE-2026-40974 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0428Multiples 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 ↗
JVN iPedia · Japanese · JVNDB-2026-013024OpenBSDのOpenSSHにおける保護されていない代替チャネルに関する脆弱性

OpenSSH 10.3より前のバージョンでは、プロキシモードの多重接続セッションに対する接続多重化の確認が省略されるという問題があります。

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.
Patch available
Affected
Fixed
Action
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 2 Apr 2026 · Last source change 2 Apr 2026, 18:16 UTC · CWE-420 · Unprotected Alternate Channel

CVE recordCVE.org · 5.2
CVSS sourceCNA
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-2026-18404
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD enriched

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
    openssh as a component of Red Hat Enterprise Linux 6; openssh-askpass as a component of Red Hat Enterprise Linux 6; openssh-clients as a component of Red Hat Enterprise Linux 6; openssh-ldap as a component of Red Hat Enterprise Linux 6; openssh-server as a component of Red Hat Enterprise Linux 6; openssh.src as a component of Red Hat Enterprise Linux 6; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 6; openssh as a component of Red Hat Enterprise Linux 7; openssh-askpass as a component of Red Hat Enterprise Linux 7; openssh-cavs as a component of Red Hat Enterprise Linux 7; openssh-clients as a component of Red Hat Enterprise Linux 7; openssh-keycat as a component of Red Hat Enterprise Linux 7; openssh-ldap as a component of Red Hat Enterprise Linux 7; openssh-server as a component of Red Hat Enterprise Linux 7; openssh-server-sysvinit as a component of Red Hat Enterprise Linux 7; openssh.src as a component of Red Hat Enterprise Linux 7; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 7; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: openssh-askpass-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-askpass-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-askpass-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-askpass-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-server-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-server-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); and 934 more
    After
    openssh as a component of Red Hat Enterprise Linux 6; openssh-askpass as a component of Red Hat Enterprise Linux 6; openssh-clients as a component of Red Hat Enterprise Linux 6; openssh-ldap as a component of Red Hat Enterprise Linux 6; openssh-server as a component of Red Hat Enterprise Linux 6; openssh.src as a component of Red Hat Enterprise Linux 6; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 6; openssh as a component of Red Hat Enterprise Linux 7; openssh-askpass as a component of Red Hat Enterprise Linux 7; openssh-cavs as a component of Red Hat Enterprise Linux 7; openssh-clients as a component of Red Hat Enterprise Linux 7; openssh-keycat as a component of Red Hat Enterprise Linux 7; openssh-ldap as a component of Red Hat Enterprise Linux 7; openssh-server as a component of Red Hat Enterprise Linux 7; openssh-server-sysvinit as a component of Red Hat Enterprise Linux 7; openssh.src as a component of Red Hat Enterprise Linux 7; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 7; 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: openssh-askpass-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-askpass-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-askpass-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-askpass-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-server-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-server-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); and 934 more
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    openssh as a component of Red Hat Enterprise Linux 6; openssh-askpass as a component of Red Hat Enterprise Linux 6; openssh-clients as a component of Red Hat Enterprise Linux 6; openssh-ldap as a component of Red Hat Enterprise Linux 6; openssh-server as a component of Red Hat Enterprise Linux 6; openssh.src as a component of Red Hat Enterprise Linux 6; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 6; openssh as a component of Red Hat Enterprise Linux 7; openssh-askpass as a component of Red Hat Enterprise Linux 7; openssh-cavs as a component of Red Hat Enterprise Linux 7; openssh-clients as a component of Red Hat Enterprise Linux 7; openssh-keycat as a component of Red Hat Enterprise Linux 7; openssh-ldap as a component of Red Hat Enterprise Linux 7; openssh-server as a component of Red Hat Enterprise Linux 7; openssh-server-sysvinit as a component of Red Hat Enterprise Linux 7; openssh.src as a component of Red Hat Enterprise Linux 7; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 7; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: openssh-askpass-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-askpass-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-askpass-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-askpass-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-server-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-server-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); and 932 more
    After
    openssh as a component of Red Hat Enterprise Linux 6; openssh-askpass as a component of Red Hat Enterprise Linux 6; openssh-clients as a component of Red Hat Enterprise Linux 6; openssh-ldap as a component of Red Hat Enterprise Linux 6; openssh-server as a component of Red Hat Enterprise Linux 6; openssh.src as a component of Red Hat Enterprise Linux 6; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 6; openssh as a component of Red Hat Enterprise Linux 7; openssh-askpass as a component of Red Hat Enterprise Linux 7; openssh-cavs as a component of Red Hat Enterprise Linux 7; openssh-clients as a component of Red Hat Enterprise Linux 7; openssh-keycat as a component of Red Hat Enterprise Linux 7; openssh-ldap as a component of Red Hat Enterprise Linux 7; openssh-server as a component of Red Hat Enterprise Linux 7; openssh-server-sysvinit as a component of Red Hat Enterprise Linux 7; openssh.src as a component of Red Hat Enterprise Linux 7; pam_ssh_agent_auth as a component of Red Hat Enterprise Linux 7; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: openssh-askpass-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-askpass-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-askpass-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-askpass-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-clients-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-debugsource-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keycat-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-keysign-debuginfo-0:9.9p1-7.el10_0.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-server-debuginfo-0:9.9p1-7.el10_0.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); openssh-server-debuginfo-0:9.9p1-7.el10_0.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); and 934 more
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-18404↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor 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-2026-35388 · cve.blacktree.nl