Out-of-bounds Read in Openvpn

CVE-2026-40215

A race condition in OpenVPN 2.6.0 through 2.6.19 and 2.7_alpha1 through 2.7.1 allows remote attackers to potentially cause a server crash or leak heap memory via a use-after-free triggered during TLS session promotion.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (23.1th percentile) — read the EPSS interpretation.