CVE-2005-0527

Firefox 1.0 allows remote attackers to execute arbitrary code via plugins that load "privileged...

5.1 Medium

Firefox 1.0 allows remote attackers to execute arbitrary code via plugins that load "privileged content" into frames, as demonstrated using certain XUL events when a user drags a scrollbar two times, aka "Firescrolling."

Exploit likelihood

7.32%Down 2.6 points since Feb 4, 2022

What each source reports

NVD Score used 5.1

Record: CVE-2005-0527
CVSS 2.0: 5.1 MediumAV:N/AC:H/Au:N/C:P/I:P/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2005-0527
Updated: 2026-11-02

EUVDEUVD-2005-0528 No score

Record: EUVD-2005-0528
Updated: 2026-11-03

GitHub AdvisoriesGHSA-pf89-5576-c2q8 No score

Firefox 1.0 allows remote attackers to execute arbitrary code via plugins that load "privileged...

Record: GHSA-pf89-5576-c2q8
Updated: 2026-11-02

Affected products

mozilla firefox

Affected packages

Affected packages
Package	Affected	Fixed
`firefox` Red Hat:enterprise_linux:4::as From an advisory covering 16 CVEs	before 0:1.0.1-1.4.3	0:1.0.1-1.4.3
`firefox` Red Hat:enterprise_linux:4::desktop From an advisory covering 16 CVEs	before 0:1.0.1-1.4.3	0:1.0.1-1.4.3
`firefox` Red Hat:enterprise_linux:4::es From an advisory covering 16 CVEs	before 0:1.0.1-1.4.3	0:1.0.1-1.4.3
`firefox` Red Hat:enterprise_linux:4::ws From an advisory covering 16 CVEs	before 0:1.0.1-1.4.3	0:1.0.1-1.4.3

History

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

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

In short

CVE-2005-0527 is a medium vulnerability (CVSS 5.1) in Mozilla Firefox, published February 25, 2005. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 7.32%, the 94th percentile. No source names a fixed version.

References

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