VULNERABILITY INTELLIGENCE

CVE-2026-11771

CVSS score7.5 HIGH
EPSS probability0.38%
CISA KEVNot currently listed
Published2026-07-30
Last modified2026-08-05
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

OpenVPN version 2.1.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows attackers via an off-by-one buffer write in the NTLM proxy authentication to potentially cause a crash via a crafted NTLM response from a malicious proxy server

Weakness classification

  • security@openvpn.net: CWE-121

Primary references