CVE-2026-11771 Affecting openvpn-devel package, versions <0:2.6.12-1.amzn2023.0.5


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.38% (31st percentile)

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  • Snyk IDSNYK-AMZN2023-OPENVPNDEVEL-18064167
  • published21 Jul 2026
  • disclosed30 Jul 2026

Introduced: 21 Jul 2026

NewCVE-2026-11771  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 openvpn-devel to version 0:2.6.12-1.amzn2023.0.5 or higher.
This issue was patched in ALAS2023-2026-1990.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openvpn-devel package and not the openvpn-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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

CVSS Base Scores

version 3.1