CVE-2026-11771
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
Scoring
- Severity
- HIGH
- CVSS base score
- 7
- CVSS vector
- CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
- EPSS probability
- 0.38%
- CWE
- CWE-193, CWE-121, CWE-787
- Published
- 2026-07-30
- Last modified
- 2026-07-30
Affected products
- OpenVPN OpenVPN
- OpenVPN OpenVPN
Weakness type
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