CVE-2025-13086

Dec. 4, 2025, 5:15 p.m.

4.6
Medium

Description

Improper validation of source IP addresses in OpenVPN version 2.6.0 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

Product(s) Impacted

Vendor Product Versions
Openvpn
  • Openvpn
  • 2.6.0-2.7_rc1

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-940
Improper Verification of Source of a Communication Channel
The product establishes a communication channel to handle an incoming request that has been initiated by an actor, but it does not properly verify that the request is coming from the expected origin.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a openvpn openvpn 2.6.0-2.7_rc1 / / / / / / /

References

https://community.openvpn.net/Security%20Announcements/CVE-2025-13086
https://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00151.html
https://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00152.html

Tags

security@openvpn.net
CWE-940
2025-12-03
CVE-2025-13086

CVSS Score

4.6 / 10

CVSS Data - 4.0

  • Attack Vector: NETWORK
  • Attack Complexity: HIGH
  • Attack Requirements: PRESENT
  • Privileges Required: NONE
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: HIGH
  • Exploit Maturity: UNREPORTED

    • CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

    View Vector String

Timeline

Published: Dec. 3, 2025, 8:16 p.m.
Last Modified: Dec. 4, 2025, 5:15 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

security@openvpn.net

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.