CVE catalog

CVE-2025-12106

openvpn: CVE-2025-12106

Severity: Critical · CVSS 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Published: Nov 18, 2025, 11:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.56% · Oct 27, 2026

Insufficient argument validation in OpenVPN 2.7_alpha1 through 2.7_rc1 allows an attacker to trigger a heap buffer over-read when parsing IP addresses

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	openvpn	sid	`2.7.8-1`	not affected
Debian	openvpn	forky	`2.7.8-1`	not affected
Debian	openvpn	trixie	`2.6.14-1+deb13u3`	not affected
Debian	openvpn	trixie-security	`2.6.14-1+deb13u3`	not affected
Debian	openvpn	bookworm	`2.6.14-0+deb12u2`	not affected
Debian	openvpn	bookworm-security	`2.6.14-0+deb12u2`	not affected
Cpe	openvpn	Not reported	Not reported	unknown

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	openvpn	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	openvpn	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	openvpn	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	openvpn	source	bookworm	`Not affected`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[openvpn]Not affected
Details (4)
- 2.6.14-0+deb12u2 · amd64 · bookworm
  Not affected
  dsa · openvpn · debian · bookworm
- 2.6.14-0+deb12u2 · arm64 · bookworm
  Not affected
  dsa · openvpn · debian · bookworm
- 2.6.14-0+deb12u2 · amd64 · bookworm-security
  Not affected
  dsa · openvpn · debian · bookworm
- 2.6.14-0+deb12u2 · arm64 · bookworm-security
  Not affected
  dsa · openvpn · debian · bookworm

Observed: Oct 27, 2026, 11:02:43 AM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]