CVE-2005-4720: Mozilla Firefox

Medium severity, CVSS 5.0. EPSS: 8.4% chance of exploitation in the next 30 days.

Mozilla Firefox 1.0.7 and earlier on Linux allows remote attackers to cause a denial of service (client crash) via an IFRAME element with a large value of the WIDTH attribute, which triggers a problem related to representation of floating-point numbers, leading to an infinite loop of widget resizes and a corresponding large number of function calls on the stack.

Affected products

• Mozilla Firefox: version 1.0.6 only; version 1.0.7 only

Published 2005-12-31. Last modified 2026-06-16.