CVE-2008-5016

CVE-2008-5016 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 5.0. 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-399.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.0)
• EPSS exploit prediction: 2% (81st percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-399
• Affected product: Mozilla Firefox
• Published: 2008-11-13
• Last modified: 2026-06-16

Description

The layout engine in Mozilla Firefox 3.x before 3.0.4, Thunderbird 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.13 allows remote attackers to cause a denial of service (crash) via multiple vectors that trigger an assertion failure or other consequences.

Frequently asked questions

What is CVE-2008-5016?

The layout engine in Mozilla Firefox 3.x before 3.0.4, Thunderbird 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.13 allows remote attackers to cause a denial of service (crash) via multiple vectors that trigger an assertion failure or other consequences.

How severe is CVE-2008-5016?

CVE-2008-5016 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2008-5016 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-5016?

CVE-2008-5016 primarily affects Mozilla Firefox. In total, 42 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-5016?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2008-5016 published?

CVE-2008-5016 was published on 2008-11-13 and last updated on 2026-06-16.

References

• http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00004.html
• http://secunia.com/advisories/32684
• http://secunia.com/advisories/32694
• http://secunia.com/advisories/32695
• http://secunia.com/advisories/32713
• http://secunia.com/advisories/32721
• http://secunia.com/advisories/32778
• http://secunia.com/advisories/32798
• http://secunia.com/advisories/34501
• http://sunsolve.sun.com/search/document.do?assetkey=1-26-256408-1
• http://ubuntu.com/usn/usn-667-1
• http://www.mandriva.com/security/advisories?name=MDVSA-2008:230
• http://www.mandriva.com/security/advisories?name=MDVSA-2008:235
• http://www.mozilla.org/security/announce/2008/mfsa2008-52.html
• http://www.redhat.com/support/errata/RHSA-2008-0976.html
• http://www.redhat.com/support/errata/RHSA-2008-0977.html
• http://www.redhat.com/support/errata/RHSA-2008-0978.html
• http://www.securityfocus.com/bid/32281
• http://www.securitytracker.com/id?1021183
• http://www.us-cert.gov/cas/techalerts/TA08-319A.html
• http://www.vupen.com/english/advisories/2008/3146
• http://www.vupen.com/english/advisories/2009/0977
• https://bugzilla.mozilla.org/buglist.cgi?bug_id=439206%2C453406%2C458637%2C444864%2C452157%2C449111%2C444260%2C457375%2C433429%2C443528%2C430394
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11356
• https://www.redhat.com/archives/fedora-package-announce/2008-November/msg00366.html
• https://www.redhat.com/archives/fedora-package-announce/2008-November/msg00385.html

Affected products (42)

• cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.0:alpha:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.0:beta2:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.0:beta5:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.0.2:*:*:*:*:*:*:*
• 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:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1.8:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1.9:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1.10:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1.11:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:2.0.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:2.0.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:2.0.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:2.0.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:2.0.0.9:*:*:*:*:*:*:*

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Other CWE-399 (Resource Management Errors) vulnerabilities

• CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
• CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
• CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

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