CVE-2026-13122

Description

OpenVPN version 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service via a malformed authentication token that triggers a reachable assertion when external-auth is enabled

Weakness Type (CWE)

CWE-617 CWE-617

References

Other References

https://community.openvpn.net/Security%20Announcements/CVE-2026-13122

Frequently Asked Questions

What is CVE-2026-13122? +

OpenVPN version 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service via a malformed authentication token that triggers a reachable assertion when external-auth is enabled

How do I check if I'm vulnerable to CVE-2026-13122? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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