Medium 6.0Published Jul 30, 2026

CVE-2026-12996A 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…

Updated under an hour ago (Oct 27, 2026, 8:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 6.0 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-416, CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: OpenVPN
NVD analysis: Analyzed
Record last updated: Jul 30, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

OpenVPN OpenVPN openvpn:openvpn (from the name)	from 2.6.0 through 2.6.20; from 2.7_alpha1 through 2.7.4	CNA record
openvpn openvpn openvpn:openvpn	from 2.6.0 before 2.6.21; from 2.7 before 2.7.5	NVD
debian debian_linux debian:debian_linux	11.0	NVD

References

References

https://community.openvpn.net/Security%20Announcements/CVE-2026-12996	vendor-advisory
https://community.openvpn.net/ReleaseHistory#openvpn-275-released-1-july-2026	release-notes
https://community.openvpn.net/ReleaseHistory#openvpn-2621-released-1-july-2026	release-notes
https://lists.debian.org/debian-lts-announce/2026/07/msg00013.html	mailing-list, third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.