CVE-2026-77638 in Tor

Sumário

de MITRE • 21/08/2026

Tor before 0.4.9.11 is prone to a race condition where in just the right circumstances a rendezvous point could man-in-the-middle (impersonate) the onion service that the client was trying to reach.

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• Responsável: MITRE
• Reservar: 20/08/2026
• Divulgação: 21/08/2026
• Moderação: aceite
• Entrada: VDB-393873
• CPE: pronto
• CWE: CWE-362 (confirmado)
• CVSS: 8.9 (CNA)
• EPSS: 0.00000
• KEV: não
• Atividades: muito baixo
• Sector: Chemical, Transportation, ...

Fontes

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-77638
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-77638
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-77638/