Debian 11 OpenSSH Critical DLA-4535-1 DoS Remote Code Execution
debian lts
April 16, 2026
Jeremy Brown discovered a flaw in the GSSAPI Key Exchange patch applied in Debian to OpenSSH, an implementation of the SSH protocol suite, affecting non-default configurations with...
Topics Covered
Summary
For Debian 11 bullseye, this problem has been fixed in version
1:8.4p1-5+deb11u6.
We recommend that you upgrade your openssh packages.
For the detailed security status of openssh please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/openssh
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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Severity
critical
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Critical
Package: openssh
Version: 1:8.4p1-5+deb11u6
CVE ID: CVE-2026-3497
Debian Bug: 1130595
Topics Covered
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