PT-2026-57584 · Openvpn+1 · Openvpn+1
CVE-2026-11771
·
Published
2026-07-02
·
Updated
2026-08-12
CVSS v3.1
9.1
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
OpenVPN versions 2.1.0 through 2.6.20
OpenVPN versions 2.7 alpha1 through 2.7.4
Description
An off-by-one buffer write occurs during NTLM proxy authentication. This 1-byte buffer overrun can be triggered by a malicious proxy server sending a crafted NTLM response, potentially leading to a system crash.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Memory Corruption
Stack Overflow
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Related Identifiers
Affected Products
Linuxmint
Openvpn