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Fencer Vulns
low 3.5

CVE-2026-73281 json

In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to...

published 2026-08-11 2 mo ago modified 2026-10-24 15 d ago also EUVD-2026-56890 , GHSA-j58v-28m8-49f3 , JLSEC-2026-1327

cvss
3.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 5%
public exploits
0
none known

Summary

In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction between agent locking and the session-bind@openssh.com extension.

Patch / fix

  • julia OpenSSH_jll 10.5.1+0
  • OpenBSD OpenSSH 10.5
  • openssh Debian 14 1:10.5p1-1
  • openssh-gssapi Debian 14 1:10.5p1-1

debian advisories DEBIAN-CVE-2026-73281

  • openssh Ubuntu 22.04 LTS 1:8.9p1-3ubuntu0.17
  • openssh Ubuntu 24.04 LTS 1:9.6p1-3ubuntu13.19
  • openssh Ubuntu 26.04 LTS 1:10.2p1-2ubuntu3.6
  • openssh Ubuntu Pro FIPS-updates 24.04 LTS 1:9.6p1-3ubuntu13.19+Fips1

ubuntu advisories UBUNTU-CVE-2026-73281

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • openssh hummingbird 1 10.5p1-1.hum1
  • openssh-keycat hummingbird 1 10.5p1-1.hum1
  • openssh-server hummingbird 1 10.5p1-1.hum1
  • openssh-askpass hummingbird 1 10.5p1-1.hum1
  • openssh-clients hummingbird 1 10.5p1-1.hum1
  • openssh-keysign hummingbird 1 10.5p1-1.hum1
  • openssh-sk-dummy hummingbird 1 10.5p1-1.hum1
  • openssh RHEL 9 9.9p1-11.el9_8

red hat advisories RHSA-2026:70719RHSA-2026:69130RHSA-2026:69129

  • openssh Linux Micro 6.1 9.6p1-slfo.1.1_7.1
  • openssh SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Basesystem 15 SP7 9.6p1-150600.6.52.2
  • openssh-askpass-gnome SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Desktop Applications 15 SP7 9.6p1-150600.6.52.1
  • openssh Linux Micro 6.0 9.6p1-159998.1.1

suse advisories SUSE-SU-2026:24382-1SUSE-SU-2026:4827-1SUSE-SU-2026:24140-1

  • openssh AlmaLinux 10 9.9p1-27.el10_2.alma.1
  • openssh-keycat AlmaLinux 10 9.9p1-27.el10_2.alma.1
  • openssh-server AlmaLinux 10 9.9p1-27.el10_2.alma.1
  • openssh-askpass AlmaLinux 10 9.9p1-27.el10_2.alma.1
  • openssh-clients AlmaLinux 10 9.9p1-27.el10_2.alma.1
  • openssh-keysign AlmaLinux 10 9.9p1-27.el10_2.alma.1
  • openssh AlmaLinux 9 9.9p1-11.el9_8.alma.1
  • openssh-keycat AlmaLinux 9 9.9p1-11.el9_8.alma.1

almalinux advisories ALSA-2026:69129ALSA-2026:69130

  • openssh Rocky Linux 9 9.9p1-11.el9_8.rocky.0.1
  • openssh Rocky Linux 10 9.9p1-27.el10_2.rocky.0.1

rocky linux advisories RLSA-2026:69130RLSA-2026:69129

  • openssh Alpine 3.24 10.3_p1-r1

alpine advisories ALPINE-CVE-2026-73281

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • openssh Azure Linux 3.0 9.8p1-10

azure linux advisories AZL-95535

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-73281 updated cvss 3.5

openssh: OpenSSH: ssh-agent allows remote execution of local operations

  • Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-9 Red Hat OpenShift Container Platform 5 openshift/ose-rhel-coreos-9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux AppStream (v. 9) openssh-askpass 9.9p1-11.el9_8, pam_ssh_agent_auth 0.10.4-8.11.el9_8
    fixed: vendor fix RHSA-2026:69130
  • Red Hat Enterprise Linux AppStream (v. 10) openssh-askpass 9.9p1-27.el10_2, openssh-keysign 9.9p1-27.el10_2
    fixed: vendor fix RHSA-2026:69129
  • Red Hat Enterprise Linux BaseOS (v. 9) openssh 9.9p1-11.el9_8, openssh-keycat 9.9p1-11.el9_8, openssh-server 9.9p1-11.el9_8, openssh-clients 9.9p1-11.el9_8
    fixed: vendor fix RHSA-2026:69130
  • Red Hat Enterprise Linux BaseOS (v. 10) openssh 9.9p1-27.el10_2, openssh-keycat 9.9p1-27.el10_2, openssh-server 9.9p1-27.el10_2, openssh-clients 9.9p1-27.el10_2
    fixed: vendor fix RHSA-2026:69129
  • Red Hat Hardened Images openssh 10.5p1-1.hum1, openssh-keycat 10.5p1-1.hum1, openssh-server 10.5p1-1.hum1, openssh-askpass 10.5p1-1.hum1, openssh-clients 10.5p1-1.hum1, openssh-keysign 10.5p1-1.hum1, +1 more
    fixed: vendor fix RHSA-2026:70719
  • Red Hat Update Infrastructure 5 rhui5/rhua-rhel9 1790242004, rhui5/installer-rhel9 1790241922
    fixed: vendor fix RHSA-2026:71603
  • Red Hat Enterprise Linux 6 openssh, openssh-ldap, openssh-server, openssh-askpass, openssh-clients, pam_ssh_agent_auth Red Hat Enterprise Linux 7 openssh, openssh-cavs, openssh-ldap, openssh-keycat, openssh-server, openssh-askpass, +3 more Red Hat Enterprise Linux 8 openssh, openssh-cavs, openssh-ldap, openssh-keycat, openssh-server, openssh-askpass, +2 more Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8 Red Hat Update Infrastructure 5 rhui5/cds-rhel9 1790241954, rhui5/haproxy-rhel9 1790241900, rhui5/cds-kubernetes-rhel9 1790241897
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
OSV 3.1 3.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
julia OpenSSH_jll
<10.5.1+0
10.5.1+0

Affected products

  • OpenBSD OpenSSH

Classification

Weakness
  • CWE-669 Incorrect Resource Transfer Between Spheres

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.