Use-after-free in OpenSSH - CVE-2026-60002

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Main Vulnerability Database Vulnerabilities #VU137704

Use-after-free in OpenSSH - CVE-2026-60002

Published: July 15, 2026


Vulnerability identifier: #VU137704
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-60002
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause a client-side denial of service.

The vulnerability exists due to use-after-free in ssh(1) when processing a host key change during key reexchange. A remote attacker can change its host key during key reexchange to cause a client-side denial of service.


Affected software

OpenSSH
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Desktop Applications Module
Basesystem Module
openSUSE Leap
openEuler
Ubuntu
Anolis OS
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
pam_ssh_agent_auth
openssh-help
openssh-server
openssh-ldap
openssh-keycat
openssh-debugsource
openssh-debuginfo
openssh-clients
openssh-cavs
openssh-askpass
openssh
openssh (Red Hat package)
openssh (Ubuntu package)
openssh-sk-dummy
openssh-doc
openssh-fips
openssh-askpass-gnome
openssh-clients-debuginfo
openssh-helpers
openssh-server-config-disallow-rootlogin
openssh-common-debuginfo
openssh-server-debuginfo
openssh-askpass-gnome-debuginfo
openssh-askpass-gnome-debugsource
openssh-cavs-debuginfo
openssh-helpers-debuginfo
openssh-common

How to mitigate CVE-2026-60002

Install security update from vendor's website.

OpenSSH - update to 10.4p1
pam_ssh_agent_auth - addressed in versions 0.10.3-9.42, 0.10.4-4.49, 0.10.4-5.20, 0.10.4-5.23
openssh-help - addressed in versions 8.2p1-42, 8.8p1-49, 9.6p1-20, 9.6p1-23
openssh-server - addressed in versions 8.2p1-42, 8.8p1-49, 9.6p1-20, 9.6p1-23
openssh-ldap - update to 8.2p1-42
openssh-keycat - addressed in versions 8.2p1-42, 8.8p1-49, 9.6p1-20, 9.6p1-23
openssh-debugsource - addressed in versions 8.2p1-42, 8.8p1-49, 9.6p1-20, 9.6p1-23
openssh-debuginfo - addressed in versions 8.2p1-42, 8.8p1-49, 9.6p1-20, 9.6p1-23
openssh-clients - addressed in versions 8.2p1-42, 8.8p1-49, 9.6p1-20, 9.6p1-23
openssh-cavs - update to 8.2p1-42
openssh-askpass - addressed in versions 8.2p1-42, 8.8p1-49, 9.6p1-20, 9.6p1-23
openssh - addressed in versions 8.2p1-42, 8.8p1-49, 9.6p1-20, 9.6p1-23
openssh (Red Hat package) - addressed in versions 8.7p1-45.el9_6.4, 9.9p1-7.el10_0.4
openssh (Ubuntu package) - addressed in versions 1:8.9p1-3ubuntu0.16, 1:9.6p1-3ubuntu13.18, 1:10.2p1-2ubuntu3.4
openssh-keycat - update to 9.6p1-12
openssh - update to 9.6p1-12
openssh-askpass - update to 9.6p1-12
openssh-clients - update to 9.6p1-12
openssh-server - update to 9.6p1-12
openssh-sk-dummy - update to 9.6p1-12
openssh-doc - update to 9.6p1-12
openssh-fips - update to 9.6p1-150600.6.49.1
openssh-askpass-gnome - update to 9.6p1-150600.6.49.1
openssh-clients-debuginfo - update to 9.6p1-150600.6.49.1
openssh-helpers - update to 9.6p1-150600.6.49.1
openssh-clients - update to 9.6p1-150600.6.49.1
openssh-server-config-disallow-rootlogin - update to 9.6p1-150600.6.49.1
openssh-common-debuginfo - update to 9.6p1-150600.6.49.1
openssh-server-debuginfo - update to 9.6p1-150600.6.49.1
openssh - update to 9.6p1-150600.6.49.1
openssh-askpass-gnome-debuginfo - update to 9.6p1-150600.6.49.1
openssh-askpass-gnome-debugsource - update to 9.6p1-150600.6.49.1
openssh-cavs - update to 9.6p1-150600.6.49.1
openssh-cavs-debuginfo - update to 9.6p1-150600.6.49.1
openssh-debuginfo - update to 9.6p1-150600.6.49.1
openssh-debugsource - update to 9.6p1-150600.6.49.1
openssh-helpers-debuginfo - update to 9.6p1-150600.6.49.1
openssh-server - update to 9.6p1-150600.6.49.1
openssh-common - update to 9.6p1-150600.6.49.1
openssh - addressed in versions 10.0p1-11.fc43, 10.2p1-13.fc44

External References

Related Security Bulletins