CVE-2006-6500

Heap-based buffer overflow in Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, Thunderbird before 1.5.0.9, and SeaMonkey before 1.0.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code by setting the CSS cursor to certain images that cause an incorrect size calculation when converting to a Windows bitmap.

Published: 2006-12-19 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-6500 is rated Moderate Risk (55.2/100): CVSS Medium severity, with high exploitation likelihood (EPSS 8.29%, 94th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2006-6500

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 37.53% 8.29% -29.24%
2 2025-08-08 36.69% 37.53% +0.85%
3 2025-03-30 — 36.69% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-6500

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2006-6500

OS Trackers for CVE-2006-6500

vendor priority summary link
alpine — CVE-2006-6500: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. https://security.alpinelinux.org/vuln/CVE-2006-6500
debian unimportant CVE-2006-6500 unimportant priority: Debian including 1 source packages (firefox), 1 status rows across 1 suites (sid): resolved 1. https://security-tracker.debian.org/tracker/CVE-2006-6500
gentoo high CVE-2006-6500: 3 GLSA(s) (200701-02, 200701-03, 200701-04), 5 atom(s) (mail-client/mozilla-thunderbird, mail-client/mozilla-thunderbird-bin, www-client/mozilla-firefox, www-client/mozilla-firefox-bin, www-client/seamonkey); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2006-6500
ubuntu medium CVE-2006-6500 medium priority: Ubuntu including 4 source packages (firefox, iceape, mozilla-thunderbird, xulrunner), 20 status rows across 5 suites (dapper, edgy, feisty, gutsy, upstream): not-affected 7, DNE 5, needs-triage 4, released 3, ignored 1. https://ubuntu.com/security/CVE-2006-6500

Affected software / configurations for CVE-2006-6500

Vendor Product Version Raw CPE
mozilla firefox >= 1.5, < 1.5.0.9 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla firefox >= 2.0, < 2.0.0.1 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla seamonkey < 1.0.7 cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
mozilla thunderbird < 1.5.0.9 cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
debian debian_linux 3.1 cpe:2.3:o:debian:debian_linux:3.1:*:*:*:*:*:*:*
debian debian_linux 4.0 cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
canonical ubuntu_linux 5.10 cpe:2.3:o:canonical:ubuntu_linux:5.10:*:*:*:*:*:*:*
canonical ubuntu_linux 6.06 cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:lts:*:*:*
canonical ubuntu_linux 6.10 cpe:2.3:o:canonical:ubuntu_linux:6.10:*:*:*:*:*:*:*

References for CVE-2006-6500

URL Tags
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00771742 Broken Link
http://secunia.com/advisories/23282 Third Party Advisory
http://secunia.com/advisories/23420 Third Party Advisory
http://secunia.com/advisories/23422 Third Party Advisory
http://secunia.com/advisories/23545 Third Party Advisory
http://secunia.com/advisories/23598 Third Party Advisory
http://secunia.com/advisories/23614 Third Party Advisory
http://secunia.com/advisories/23672 Third Party Advisory
http://secunia.com/advisories/23692 Third Party Advisory
http://security.gentoo.org/glsa/glsa-200701-02.xml Third Party Advisory
http://securitytracker.com/id?1017399 Third Party Advisory VDB Entry
http://securitytracker.com/id?1017400 Third Party Advisory VDB Entry
http://securitytracker.com/id?1017401 Third Party Advisory VDB Entry
http://www.gentoo.org/security/en/glsa/glsa-200701-03.xml Third Party Advisory
http://www.gentoo.org/security/en/glsa/glsa-200701-04.xml Third Party Advisory
http://www.kb.cert.org/vuls/id/722244 Third Party Advisory US Government Resource
http://www.mandriva.com/security/advisories?name=MDKSA-2007:010 Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDKSA-2007:011 Third Party Advisory
http://www.mozilla.org/security/announce/2006/mfsa2006-69.html Vendor Advisory
http://www.novell.com/linux/security/advisories/2006_80_mozilla.html Broken Link
http://www.novell.com/linux/security/advisories/2007_06_mozilla.html Broken Link
http://www.securityfocus.com/bid/21668 Third Party Advisory VDB Entry
http://www.us-cert.gov/cas/techalerts/TA06-354A.html Third Party Advisory US Government Resource
http://www.vupen.com/english/advisories/2006/5068 Third Party Advisory
http://www.vupen.com/english/advisories/2008/0083 Third Party Advisory
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