What is CVE-2006-6504?

CVE-2006-6504 is a vulnerability in Mozilla Firefox, classified under Code Injection. Published 2006-12-20.

Is CVE-2006-6504 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Mozilla Firefox

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.

Vulnerability class: RCE (Remote Code Execution)

Published 2006-12-20 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 9.3 (High). Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.089 (95.1th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.087 · newest: 0.089 · change: +0.002

Affected products

Mozilla Firefox
Mozilla Seamonkey
Canonical Ubuntu Linux — versions 5.10, 6.06, 6.10

Weakness classification (CWE)

CWE-94 — Code Injection

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

www.securityfocus.com/bid/21668 (VDB Entry, Third Party Advisory, vdb-entry)
secunia.com/advisories/23433 (Third Party Advisory, third-party-advisory)
www.mandriva.com/security/advisories (vendor-advisory, Third Party Advisory)
secunia.com/advisories/23439 (Third Party Advisory, third-party-advisory)
secunia.com/advisories/23672 (Third Party Advisory, third-party-advisory)
www.vupen.com/english/advisories/2006/5068 (Third Party Advisory, vdb-entry)
secunia.com/advisories/23468 (Third Party Advisory, third-party-advisory)
rhn.redhat.com/errata/RHSA-2006-0758.html (vendor-advisory, Third Party Advisory)
securitytracker.com/id (VDB Entry, Third Party Advisory, vdb-entry)
secunia.com/advisories/23692 (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2006-6504?: CVE-2006-6504 is a vulnerability in Mozilla Firefox, classified under Code Injection. Published 2006-12-20.
Is CVE-2006-6504 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.