Vulnerability in Openvpn
CVE-2025-13086
Improper validation of source IP addresses in OpenVPN version 2.6.0 through 2.6.15 and 2.7_alpha1 through 2.7_rc1 allows an attacker to open a session from a different IP address which did not initiate the connection resulting in a denial of service for the originating client
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.7% 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 2.6.0, 2.7_alpha1, 2.7
Weakness classification (CWE)
References
- community.openvpn.net/Security Announcements/CVE-2025-13086 (vendor-advisory, Vendor Advisory)
- www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00152.html (release-notes, Mailing List, Release Notes)
- www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00151.html (release-notes, Mailing List, Release Notes)
Frequently asked questions
- What is CVE-2025-13086?
- CVE-2025-13086 is a high-severity vulnerability in Openvpn, classified under Improper Verification of Source of a Communication Channel. CVSS score: 7.5/10. Published 2025-12-03.
- How severe is CVE-2025-13086?
- High severity. CVSS v3 base score is 7.5 out of 10.