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Ubuntu 25.10: OpenVPN Important Access Risk USN-7898-1 CVE-2025-13086

ubuntu
Calendar Grey November 27, 2025
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OpenVPN update addresses unintended access risk in Ubuntu. Secure your system with recommended patches.
OpenVPN could allow unintended access to network services.

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.

Topics%20covered

Topics Covered

security advisory Ubuntu important network services openvpn unintended access

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

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7898-1

Topics%20covered

Topics Covered

security advisory Ubuntu important network services openvpn unintended access

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

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