CVE-2026-12996

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 v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://community.openvpn.net/ReleaseHistory#openvpn-2621-released-1-july-2026	Release Notes
https://community.openvpn.net/ReleaseHistory#openvpn-275-released-1-july-2026	Release Notes
https://community.openvpn.net/Security%20Announcements/CVE-2026-12996	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2026/07/msg00013.html	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:openvpn:openvpn::::::::
	cpe:2.3:a:openvpn:openvpn::::::::
	cpe:2.3:o:debian:debian_linux:11.0:::::::*

History

No history.

Information

Published : 2026-07-30 17:16

Updated : 2026-08-05 19:38

NVD link : CVE-2026-12996

Mitre link : CVE-2026-12996

CVE.ORG link : CVE-2026-12996

JSON object : View

Products Affected

debian

debian_linux

openvpn

openvpn

CWE

CWE-125

Out-of-bounds Read

CWE-416

Use After Free

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