CVE-2007-5896: Mozilla Firefox

High severity, CVSS 7.1. EPSS: 1.2% chance of exploitation in the next 30 days.

Mozilla Firefox 2.0.0.9 allows remote attackers to cause a denial of service (CPU consumption and crash) via an iframe with Javascript that sets the document.location to contain a leading NULL byte (\x00) and a (1) res://, (2) about:config, or (3) file:/// URI.

Affected products

• Mozilla Firefox: version 2.0.0.9 only

Published 2007-11-08. Last modified 2026-06-16.