CVE-2008-2785

CVE-2008-2785 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-189.

Key facts

• Severity: Critical (CVSS 2.0 base score 9.3)
• EPSS exploit prediction: 5% (92nd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-189
• Affected product: Mozilla Firefox
• Published: 2008-06-19
• Last modified: 2026-06-16

Description

Mozilla Firefox before 2.0.0.16 and 3.x before 3.0.1, Thunderbird before 2.0.0.16, and SeaMonkey before 1.1.11 use an incorrect integer data type as a CSS object reference counter in the CSSValue array (aka nsCSSValue:Array) data structure, which allows remote attackers to execute arbitrary code via a large number of references to a common CSS object, leading to a counter overflow and a free of in-use memory, aka ZDI-CAN-349.

Frequently asked questions

What is CVE-2008-2785?

Mozilla Firefox before 2.0.0.16 and 3.x before 3.0.1, Thunderbird before 2.0.0.16, and SeaMonkey before 1.1.11 use an incorrect integer data type as a CSS object reference counter in the CSSValue array (aka nsCSSValue:Array) data structure, which allows remote attackers to execute arbitrary code via a large number of references to a common CSS object, leading to a counter overflow and a free of in-use memory, aka ZDI-CAN-349.

How severe is CVE-2008-2785?

CVE-2008-2785 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2008-2785 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-2785?

CVE-2008-2785 primarily affects Mozilla Firefox. In total, 75 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-2785?

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-2008-2785 published?

CVE-2008-2785 was published on 2008-06-19 and last updated on 2026-06-16.

References

• http://blog.mozilla.com/security/2008/06/18/new-security-issue-under-investigation/
• http://dvlabs.tippingpoint.com/blog/2008/06/18/vulnerability-in-mozilla-firefox-30
• http://rhn.redhat.com/errata/RHSA-2008-0616.html
• http://secunia.com/advisories/30761
• http://secunia.com/advisories/31121
• http://secunia.com/advisories/31122
• http://secunia.com/advisories/31129
• http://secunia.com/advisories/31144
• http://secunia.com/advisories/31145
• http://secunia.com/advisories/31154
• http://secunia.com/advisories/31157
• http://secunia.com/advisories/31176
• http://secunia.com/advisories/31183
• http://secunia.com/advisories/31195
• http://secunia.com/advisories/31220
• http://secunia.com/advisories/31253
• http://secunia.com/advisories/31261
• http://secunia.com/advisories/31270
• http://secunia.com/advisories/31286
• http://secunia.com/advisories/31306
• http://secunia.com/advisories/31377
• http://secunia.com/advisories/31403
• http://secunia.com/advisories/33433
• http://secunia.com/advisories/34501
• http://security.gentoo.org/glsa/glsa-200808-03.xml
• http://slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.410484
• http://sunsolve.sun.com/search/document.do?assetkey=1-26-256408-1
• http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0238
• http://www.debian.org/security/2008/dsa-1614
• http://www.debian.org/security/2008/dsa-1615

Affected products (75)

• cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.10:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.11:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.12:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.13:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:2.0.0.14:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0:alpha:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0:beta:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1:alpha:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1:beta:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1.7:*:*:*:*:*:*:*

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