OpenVPN 2.6.0-2.6.20 & 2.7.1-2.7.4 UAF in TLS Session Promotion
CVE-2026-13117 Published on July 30, 2026
An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS session promotion, potentially leading to a denial of service or memory leakage
Vulnerability Analysis
CVE-2026-13117 can be exploited with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-13117 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-13117
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Affected Versions
OpenVPN:- Version 2.6.0, <= 2.6.20 is affected.
- Version 2.7_alpha1, <= 2.7.4 is affected.