Detections
Analytics

CVE-2026-12996

medium

Description

A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry

References

https://lists.debian.org/debian-lts-announce/2026/07/msg00013.html

https://community.openvpn.net/Security%20Announcements/CVE-2026-12996

https://community.openvpn.net/ReleaseHistory#openvpn-275-released-1-july-2026

https://community.openvpn.net/ReleaseHistory#openvpn-2621-released-1-july-2026

Details

Source: Mitre, NVD

Published: 2026-07-30

Updated: 2026-08-05

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:C

Severity: High

CVSS v3

Base Score: 8.1

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity: High

CVSS v4

Base Score: 6

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00397