Debian: OpenVPN Critical HMAC Flaw Bypass CVE-2025-13086 DSA-6069-1
debian
December 3, 2025
It was discovered that openvpn, a virtual private network application, does not properly handle HMAC verification checks
Topics Covered
Summary
For the oldstable distribution (bookworm), this problem has been fixed
in version 2.6.3-1+deb12u4.
For the stable distribution (trixie), this problem has been fixed in
version 2.6.14-1+deb13u1.
We recommend that you upgrade your openvpn packages.
For the detailed security status of openvpn please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/source-package/openvpn
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
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Severity
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Critical
Package: openvpn
CVE ID: CVE-2025-13086
Topics Covered
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