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7.5HIGH

CVE-2025-13086 — Improper validation of source IP addresses in OpenVPN version 2.6.0 through 2.6.15 and 2.7_alpha1 through…

Openvpn · Openvpn · Published 3 Dec 2025 · Modified 25 Sept 2026

Description

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

References

What to do
  1. Check whether Openvpn is in your asset inventory.
  2. Patch in the next maintenance window; prioritise internet-facing systems.
  3. Record the decision in your risk register for audit evidence.
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Link: adminadda.com/cve/CVE-2025-13086