{"id":"CVE-2026-77642","title":"tor before 0.4.9.9 was prone to an out-of-bounds write when parsing a consensus or  detached signature with unexpected signature digest type","summary":"tor before 0.4.9.9 was prone to an out-of-bounds write when parsing a consensus or  detached signature with unexpected signature digest type. Impact  is minor for most Tor roles, but potentially major for directory   authorities. This is…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:H","cwe":["CWE-787"],"vendor":"torproject","product":"tor","affected":["tor < 0.4.9.9"],"patched":["tor 0.4.9.9"],"published":"2026-08-20","updated":"2026-09-08","sourceUpdated":"2026-09-08T18:11:10.597","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77642","references":[{"url":"https://gitlab.torproject.org/tpo/core/tor/-/raw/tor-0.4.9.9/ChangeLog","label":"cve@mitre.org"}],"tags":["nvd"],"epss":0.00202,"epssPercentile":0.10402,"ingestedAt":"2026-09-08T19:08:49.591Z","slug":"CVE-2026-77642","body":"## Overview\n\ntor before 0.4.9.9 was prone to an out-of-bounds write when parsing a consensus or  detached signature with unexpected signature digest type. Impact  is minor for most Tor roles, but potentially major for directory   authorities. This is TROVE-2026-019.\n\n## Affected\n\n- `tor < 0.4.9.9`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `tor 0.4.9.9`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}