Description
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
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
https://community.openvpn.net/Security%20Announcements/CVE-2026-13122
Scores
CVSS v3
5.3
EPSS
0.0029
EPSS Percentile
21.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-617
Status
published
Products (3)
Openvpn/OpenVPN
2.6.0 - 2.6.20
openvpn/openvpn
2.6.0 - 2.6.21
Openvpn/OpenVPN
2.7_alpha1 - 2.7.4
Published
Jul 06, 2026
Tracked Since
Jul 06, 2026