CVE-2026-77642

Published Aug 20, 2026

Last updated 4 days ago

Overview

Description
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 TROVE-2026-019.
Source
cve@mitre.org
NVD status
Received

Risk scores

CVSS 3.1

Type
Secondary
Base score
7.5
Impact score
4.7
Exploitability score
2.2
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:H
Severity
HIGH

Weaknesses

cve@mitre.org
CWE-787

Social media

Hype score
Not currently trending

References

Sources include official advisories and independent security research.