Vulnerability DatabaseCVE-2026-13122
Mend.io Vulnerability Database
The largest open source vulnerability database
What is a Vulnerability ID?
New vulnerability? Tell us about it!
CVE-2026-13122
Published:July 06, 2026
Updated:July 21, 2026
OpenVPN version 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service via a malformed authentication token that triggers a reachable assertion when external-auth is enabled
Affected Packages
https://github.com/OpenVPN/openvpn.git (GITHUB):
Affected version(s) >=v2.7_alpha1 <v2.7.5
Fix Suggestion:
Update to version v2.7.5
https://github.com/OpenVPN/openvpn.git (GITHUB):
Affected version(s) >=v2.6.0 <v2.6.21
Fix Suggestion:
Update to version v2.6.21
Related Resources (1)
https://community.openvpn.net/Security%20Announcements/CVE-2026-13122
Do you need more information?
Contact Us
CVSS v4
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.8
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Reachable Assertion
CWE-617
EPSS
Base Score:
0.49