# CVE-2026-12932 - memory leak using `--tls-crypt-v2`

A memory leak in the tls-crypt-v2 client key extraction in OpenVPN 2.5+ allows remote attackers to cause a denial of service (memory exhaustion) via a flood of crafted packets.

OpenVPN version 2.5.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 are affected. This is fixed in versions 2.6.21 and 2.7.5.

CVE Record: [CVE-2026-12932](https://www.cve.org/CVERecord?id=CVE-2026-12932)

Github:
* [OpenVPN/openvpn-private-issues#133](https://github.com/OpenVPN/openvpn-private-issues/issues/133)

Release notes:
* [openvpn-2.7.5](https://community.openvpn.net/ReleaseHistory#openvpn-275-released-1-july-2026)
* [openvpn-2.6.21](https://community.openvpn.net/ReleaseHistory#openvpn-2621-released-1-july-2026)

Reported-By: Valton Taa