CVE-2005-4720

Mozilla Firefox 1.0.7 and earlier on Linux allows remote attackers to cause a denial of service ...

5.0 MediumPublic exploit

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.

Exploit likelihood

8.41%Up 1.6 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

Record: CVE-2005-4720
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2005-4720
Updated: 2026-11-02

EUVDEUVD-2005-4713 No score

Record: EUVD-2005-4713
Updated: 2026-11-03

GitHub AdvisoriesGHSA-4677-48q7-5jfp No score

Mozilla Firefox 1.0.7 and earlier on Linux allows remote attackers to cause a denial of service ...

Record: GHSA-4677-48q7-5jfp
Updated: 2026-11-02

Affected products

mozilla firefox

Affected packages

Affected packages
Package	Affected	Fixed
`mozilla-firefox` Debian:3.1 From an advisory covering 23 CVEs	before 1.0.4-2sarge6, plus listed versions 1.0.4-21.0.4-2sarge11.0.4-2sarge21.0.4-2sarge31.0.4-2sarge41.0.4-2sarge5	1.0.4-2sarge6

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Mozilla Firefox 1.0.6/1.0.7 - iFrame Handling Denial of Service	2005-10-05

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2005-4720 is a medium vulnerability (CVSS 5.0) in Mozilla Firefox, published December 31, 2005. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 8.41%, the 95th percentile. No source names a fixed version.