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CVE-2026-77642
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.
9.3 CRITICALEPSS 0.35%Not in KEVNVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.3 | CRITICAL | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H |
| 7.5 | HIGH | 3.1mitre (CNA) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:H |
Details
- CVE ID
- CVE-2026-77642
- Status
- Analyzed
- Assigner (CNA)
- mitre
- Published
- Aug 20, 2026
- Last modified
- 2026-10-18 20:10 UTC
- Weaknesses
- CWE-787 · Out-of-bounds Write
Affected Products
As published by the CNA in the CVE record.
torprojectTor1 version range
- 0.2.8.2-alpha before 0.4.9.9