CVE-2026-77642
Fixed in a distro release EPSS <1%CVSS 7.5
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.
Products: torproject tor
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | tor | 0.4.9.9-1 |
| Debian 13 | tor | 0.4.9.11-0+deb13u1 |
| Debian 14 | tor | 0.4.9.9-1 |
| Ubuntu 22.04 LTS | tor | no fix |
| Ubuntu 24.04 LTS | tor | no fix |
| Ubuntu 26.04 LTS | tor | no fix |
| Ubuntu Pro 14.04 LTS | tor | no fix |
| Ubuntu Pro 16.04 LTS | tor | no fix |
| Ubuntu Pro 18.04 LTS | tor | no fix |
| Ubuntu Pro 20.04 LTS | tor | no fix |