Bug 2509516 (CVE-2026-11771) - CVE-2026-11771 openvpn: OpenVPN: Denial of Service via crafted NTLM proxy response
Summary: CVE-2026-11771 openvpn: OpenVPN: Denial of Service via crafted NTLM proxy res...
Keywords:
Status: NEW
Alias: CVE-2026-11771
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2509669 2509668
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-30 17:01 UTC by OSIDB Bzimport
Modified: 2026-07-31 04:35 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-07-30 17:01:46 UTC 
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
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