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.

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…

EPSS: 0.006 (45.8th percentile) — read the EPSS interpretation.

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.

Affected products

Openvpn — versions 2.6.0, 2.7_alpha1, 2.7

Weakness classification (CWE)

CWE-940 — Improper Verification of Source of a Communication Channel

References

security@openvpn.net (vendor-advisory, Vendor Advisory)
security@openvpn.net (release-notes, Mailing List, Release Notes)
security@openvpn.net (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.