CVE-2012-0841: Apple iPhone OS

Medium severity, CVSS 5.0. EPSS: 3.3% chance of exploitation in the next 30 days.

libxml2 before 2.8.0 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted XML data.

Affected products

• Apple iPhone OS: up to and including 6.1.4; version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; version 1.1.0 only; version 1.1.1 only; …
• Xmlsoft LIBXML2: up to and including 2.7.8; version 1.7.0 only; version 1.7.1 only; version 1.7.2 only; version 1.7.3 only; version 1.7.4 only; …

Published 2012-12-21. Last modified 2026-06-16.