An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS session promotion, potentially leading to a denial of service or memory leakage
https://community.openvpn.net/Security%20Announcements/CVE-2026-13117
https://community.openvpn.net/ReleaseHistory#openvpn-275-released-1-july-2026
https://community.openvpn.net/ReleaseHistory#openvpn-2621-released-1-july-2026
Published: 2026-07-30
Updated: 2026-08-05
Base Score: 8.5
Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:C
Severity: High
Base Score: 8.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Severity: High
Base Score: 6
Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Severity: Medium
EPSS: 0.00366