CVE-2026-12996

Name
CVE-2026-12996
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
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security@openvpn.net https://community.openvpn.net/ReleaseHistory#openvpn-2621-released-1-july-2026
security@openvpn.net https://community.openvpn.net/ReleaseHistory#openvpn-275-released-1-july-2026
security@openvpn.net https://community.openvpn.net/Security%20Announcements/CVE-2026-12996
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2026/07/msg00013.html

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:* openvpn >= 2.6.0 < 2.6.21
cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:* openvpn >= 2.7 < 2.7.5
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* debian_linux == None == 11.0

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
openvpn edge-main 2.7.5-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
openvpn edge-main 2.7.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.20-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.17-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.16-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.16-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.14-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.13-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.12-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.12-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.11-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.10-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.9-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.9-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.8-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.6-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.4-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.6.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.24-main 2.7.5-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
openvpn 3.24-main 2.7.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.23-main 2.6.20-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.23-main 2.6.16-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.22-main 2.6.20-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.22-main 2.6.16-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.22-main 2.6.14-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.22-main 2.6.11-r0 None possibly vulnerable
openvpn 3.22-main 2.6.7-r0 None possibly vulnerable
openvpn 3.21-main 2.6.20-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.21-main 2.6.16-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.21-main 2.6.14-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.21-main 2.6.12-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.21-main 2.6.11-r0 None possibly vulnerable
openvpn 3.21-main 2.6.7-r0 None possibly vulnerable
openvpn 3.20-main 2.6.20-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.20-main 2.6.16-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.20-main 2.6.11-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.20-main 2.6.10-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.20-main 2.6.7-r0 None possibly vulnerable
openvpn 3.19-main 2.6.16-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.19-main 2.6.11-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.19-main 2.6.8-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.19-main 2.6.7-r0 None possibly vulnerable