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CVE record · CVE-2026-55654

Openssh: heap out-of-bounds read in red hat enterprise linux versions of openssh gssapi indicator cleanup due to missing null sentinel termination

CVSS 3.7 LowEPSS 0.0065 · 51st percentile

Published by the CVE Program (CNA: redhat) at 23 Jun 2026, 03:37 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 Package name: openssh https://access.redhat.com/downloads/content/package-browser/
  • unaffected 0:9.9p1-25.el10_2 to before * rpm
Other versions: affected
Red Hat Red Hat Enterprise Linux 9 Package name: openssh https://access.redhat.com/downloads/content/package-browser/
  • unaffected 0:9.9p1-9.el9_8 to before * rpm
Other versions: affected
Red Hat Red Hat Enterprise Linux 9 Package name: openssh https://access.redhat.com/downloads/content/package-browser/
  • unaffected 0:9.9p1-9.el9_8 to before * rpm
Other versions: affected
Red Hat Red Hat Hardened Images Package name: openssh-main https://catalog.redhat.com/software/containers/
  • unaffected 10.3p1-6.hum1 to before * rpm
Other versions: affected
Red Hat Red Hat Update Infrastructure 5 Package name: rhui5/installer-rhel9 https://catalog.redhat.com/software/containers/
  • unaffected 1786435483 to before * rpm
Other versions: affected
Red Hat Red Hat Update Infrastructure 5 Package name: rhui5/rhua-rhel9 https://catalog.redhat.com/software/containers/
  • unaffected 1786533529 to before * rpm
Other versions: affected
Red Hat Red Hat Update Infrastructure 5 Package name: rhui5/installer-tp-rhel9 https://catalog.redhat.com/software/containers/
  • unaffected 1787135742 to before * rpm
Other versions: affected
Red Hat Red Hat Update Infrastructure 5 Package name: rhui5/rhua-tp-rhel9 https://catalog.redhat.com/software/containers/
  • unaffected 1787241260 to before * rpm
Other versions: affected
Red Hat Red Hat Enterprise Linux 6 Package name: openssh https://access.redhat.com/downloads/content/package-browser/ No versions given Other versions: unaffected
Red Hat Red Hat Enterprise Linux 7 Package name: openssh https://access.redhat.com/downloads/content/package-browser/ No versions given Other versions: unaffected
Red Hat Red Hat Enterprise Linux 8 Package name: openssh https://access.redhat.com/downloads/content/package-browser/ No versions given Other versions: unaffected
Red Hat Red Hat OpenShift Container Platform 4 Package name: openshift/ose-rhel-coreos-8 https://access.redhat.com/downloads/content/package-browser/ No versions given Other versions: affected
Red Hat Red Hat OpenShift Container Platform 4 Package name: openshift/ose-rhel-coreos-9 https://access.redhat.com/downloads/content/package-browser/ No versions given Other versions: affected
Identifiers
CVE-2026-55654
CNA
redhat
Weakness (CWE)
CWE-125
Tags
Published
23 Jun 2026
Updated
24 Sept 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
3.7 Low 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L CNA (redhat)
  • CISA KEV Not listed.
  • EPSS 0.0065, the 51st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 23 Jun 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.