CVE-2026-11771 in OpenVPN

Sumário

de MITRE • 30/07/2026

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

• Responsável: OpenVPN
• Reservar: 09/06/2026
• Divulgação: 30/07/2026
• Moderação: aceite
• Entrada: VDB-384867
• CPE: pronto
• CWE: CWE-193 (confirmado)
• CVSS: 7.5 (VulDB)
• EPSS: 0.00000
• KEV: não
• Atividades: muito baixo
• Sector: Hospital, Energy, ...

Fontes

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-11771
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-11771
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-11771/