VULNERABILITY INTELLIGENCE

CVE-2026-77638

CVSS score8.9 HIGH
EPSS probability0.30%
CISA KEVNot currently listed
Published2026-08-20
Last modified2026-10-18
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L

Description

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.

Weakness classification

  • cve@mitre.org: CWE-362

Primary references

  • cve@mitre.org — Permissions Required, Release Notes, Vendor Advisory