CVE-2016-8860: Torproject Tor

High severity, CVSS 7.5. EPSS: 1.9% chance of exploitation in the next 30 days.

Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to expect that buf_t data had NUL termination, but the implementation of or/buffers.c did not ensure that NUL termination was present, which allows remote attackers to cause a denial of service (client, hidden service, relay, or authority crash) via crafted data.

Affected products

• Torproject Tor: up to and including 0.2.8.8; version 0.2.9.0 only; version 0.2.9.1 only; version 0.2.9.2 only; version 0.2.9.3 only

Published 2017-01-04. Last modified 2026-06-17.