CVE-2026-12996
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6epss 0.4%
exploitation probability
0.4%top 68% of all CVEs
observed exploitation
nono source reports it
A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
OpenVPN · OpenVPNReferences
https://community.openvpn.net/ReleaseHistory#openvpn-2621-released-1-july-2026https://community.openvpn.net/ReleaseHistory#openvpn-275-released-1-july-2026https://community.openvpn.net/Security%20Announcements/CVE-2026-12996https://lists.debian.org/debian-lts-announce/2026/07/msg00013.html