Vulnerability in Openvpn
CVE-2025-12106
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
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (45.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Openvpn — versions 2.7_alpha1, 2.6.13, 2.7
Weakness classification (CWE)
References
- community.openvpn.net/Security Announcements/CVE-2025-12106 (vendor-advisory, Vendor Advisory)
- www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00152.html (release-notes, Mailing List)
Frequently asked questions
- What is CVE-2025-12106?
- CVE-2025-12106 is a critical-severity vulnerability in Openvpn, classified under Buffer Over-read. CVSS score: 9.1/10. Published 2025-12-01.
- How severe is CVE-2025-12106?
- Critical severity. CVSS v3 base score is 9.1 out of 10.