CVE-2007-3152: Daniel Stenberg C-Ares

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

c-ares before 1.4.0 uses a predictable seed for the random number generator for the DNS Transaction ID field, which might allow remote attackers to spoof DNS responses by guessing the field value.

Affected products

• Daniel Stenberg C-Ares: version 1.0 only; version 1.1 only; version 1.2 only; version 1.2.1 only; version 1.3 only; version 1.3.1 only; …

Published 2007-06-11. Last modified 2026-06-16.