CVE-2026-11604

Name
CVE-2026-11604
Description
An incorrect buffer size calculation in the epoch key generator in OpenVPN ovpn-dco-win version 2.0.0 through 2.8.3 allows a remote authenticated peer to trigger a heap-based buffer overflow and kernel memory corruption via a crafted data packet, resulting in a system crash (denial of service).
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/Security%20Announcements/CVE-2026-11604
security@openvpn.net https://github.com/OpenVPN/ovpn-dco-win/releases

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:* openvpn >= 2.0.0 <= 2.8.3

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
openvpn edge-main 2.7.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.7.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
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 edge-main 2.5.8-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.5.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.5.6-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.5.6-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.5.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.5.4-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.5.3-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.5.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.5.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn edge-main 2.4.9-r0 None possibly vulnerable
openvpn edge-main 2.4.6-r0 None possibly vulnerable
openvpn 3.24-main 2.7.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
openvpn 3.24-main 2.7.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
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 3.22-main 2.5.6-r0 None possibly vulnerable
openvpn 3.22-main 2.5.2-r0 None possibly vulnerable
openvpn 3.22-main 2.4.9-r0 None possibly vulnerable
openvpn 3.22-main 2.4.6-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 3.21-main 2.5.6-r0 None possibly vulnerable
openvpn 3.21-main 2.5.2-r0 None possibly vulnerable
openvpn 3.21-main 2.4.9-r0 None possibly vulnerable
openvpn 3.21-main 2.4.6-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 3.20-main 2.5.6-r0 None possibly vulnerable
openvpn 3.20-main 2.5.2-r0 None possibly vulnerable
openvpn 3.20-main 2.4.9-r0 None possibly vulnerable
openvpn 3.20-main 2.4.6-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
openvpn 3.19-main 2.5.6-r0 None possibly vulnerable
openvpn 3.19-main 2.5.2-r0 None possibly vulnerable
openvpn 3.19-main 2.4.9-r0 None possibly vulnerable
openvpn 3.19-main 2.4.6-r0 None possibly vulnerable