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[USN-7898-1] OpenVPN vulnerability

Posted on 27 November 2025
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-7898-1
November 27, 2025

openvpn vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.10
- Ubuntu 25.04
- Ubuntu 24.04 LTS

Summary:

OpenVPN could allow unintended access to network services.

Software Description:
- openvpn: virtual private network software

Details:

Joshua Rogers discovered that OpenVPN incorrectly handled HMAC verification
checks. A remote attacker could possibly use this issue to bypass source IP
address validation.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
openvpn 2.6.14-2ubuntu1.1

Ubuntu 25.04
openvpn 2.6.14-0ubuntu0.25.04.3

Ubuntu 24.04 LTS
openvpn 2.6.14-0ubuntu0.24.04.3

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7898-1
CVE-2025-13086

Package Information:
https://launchpad.net/ubuntu/+source/openvpn/2.6.14-2ubuntu1.1
https://launchpad.net/ubuntu/+source/openvpn/2.6.14-0ubuntu0.25.04.3
https://launchpad.net/ubuntu/+source/openvpn/2.6.14-0ubuntu0.24.04.3

--===============6716959169347460734==Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature

 

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