Linux · Debian · Security advisory · August 21, 2026

DEBIAN-CVE-2026-77642: tor security update

DEBIAN-CVE-2026-77642, released August 21, 2026, fixes 1 CVE in tor. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent
CVEs closed
1
1 rated Critical
Exploited
0
None reported
Highest CVSS
9.3
Base score, 0 to 10
Highest EPSS
0.0035
29th percentile

Fixed package versions

ProductReleaseFixed in
torDebian 12.15 (bookworm)0.4.9.9-1
torDebian 13.5 (trixie)0.4.9.11-0+deb13u1
torDebian 140.4.9.9-1

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
Urgent CVE-2026-77642 tor: tor before 0.4.9.9 was prone to an out-of-bounds write when parsing a consensus or detached signature with unexpecte...9.3 0.0035 None reported
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