CVE-2026-77642
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 |
| Vendor | torproject |
| Product | tor |
| Published | Aug 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
High
Affected Versions
torproject / Tor
0.2.8.2-alpha < 0.4.9.9