7.5highHigh
CVE-2026-77642
Torproject Tor
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.
Exploitation status
- A vendor advisory or patch reference has been published.
What the metrics mean
- It is reachable over a network, without needing local access.
- For an attacker who can reach it, exploitation depends on conditions outside the attacker's control.
- To exploit it, no account is needed.
- Beyond that, no action by a user is required.
Scoring
- CVSS
- 7.5 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:H- Weakness
- CWE-787
- Assigned by
- cve@mitre.org
Dates
- Published
- 2026-08-20
- Last modified
- 2026-09-08
- Sources
- NVD
Affected products
- Torproject Tor- 0.4.9.9
As listed in the NVD configuration data. Not a statement about your estate.