CVE-2006-6504

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2006-12-20 · updated 2026-06-16
Weakness: CWE-94

Description

Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, and SeaMonkey before 1.0.7 allows remote attackers to execute arbitrary code by appending an SVG comment DOM node to another type of document, which triggers memory corruption.

Affected products

Canonical Ubuntu Linux: 5.10, 6.06, 6.10
Mozilla Firefox: from 1.5 before 1.5.0.9; from 2.0 before 2.0.0.1 — fixed in 1.5.0.9, 2.0.0.1
Mozilla Seamonkey: before 1.0.7 — fixed in 1.0.7

How to fix

Upgrade to a fixed version: Mozilla Firefox 1.5.0.9, 2.0.0.1; Mozilla Seamonkey 1.0.7. Check the vendor advisory for mitigations.

References

http://fedoranews.org/cms/node/2297
http://fedoranews.org/cms/node/2338
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00771742
http://rhn.redhat.com/errata/RHSA-2006-0758.html
http://rhn.redhat.com/errata/RHSA-2006-0759.html
http://rhn.redhat.com/errata/RHSA-2006-0760.html
http://secunia.com/advisories/23282
http://secunia.com/advisories/23422
http://secunia.com/advisories/23433
http://secunia.com/advisories/23439
http://secunia.com/advisories/23440

Get alerted when CVE-2006-6504 or the next vulnerability affects your stack