CVE-2006-6504

CVE-2006-6504 is a critical-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

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.

Frequently asked questions

What is CVE-2006-6504?
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.
How severe is CVE-2006-6504?
CVE-2006-6504 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2006-6504 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-6504?
CVE-2006-6504 primarily affects Mozilla Firefox. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-6504?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2006-6504 published?
CVE-2006-6504 was published on 2006-12-20 and last updated on 2026-06-16.

References

Affected products (5)

More vulnerabilities in Mozilla Firefox

All CVEs affecting Mozilla Firefox →

Other CWE-94 (Code Injection) vulnerabilities

Browse all CWE-94 (Code Injection) vulnerabilities →