CVE-2010-3776

CVE-2010-3776 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-119.

Key facts

• Severity: Critical (CVSS 2.0 base score 9.3)
• EPSS exploit prediction: 9% (94th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Mozilla Firefox
• Published: 2010-12-10
• Last modified: 2026-06-16

Description

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 3.5.16 and 3.6.x before 3.6.13, Thunderbird before 3.0.11 and 3.1.x before 3.1.7, and SeaMonkey before 2.0.11 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

Frequently asked questions

What is CVE-2010-3776?

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 3.5.16 and 3.6.x before 3.6.13, Thunderbird before 3.0.11 and 3.1.x before 3.1.7, and SeaMonkey before 2.0.11 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

How severe is CVE-2010-3776?

CVE-2010-3776 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2010-3776 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-2010-3776?

CVE-2010-3776 primarily affects Mozilla Firefox. In total, 233 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-3776?

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-2010-3776 published?

CVE-2010-3776 was published on 2010-12-10 and last updated on 2026-06-16.

References

• http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052022.html
• http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052032.html
• http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052110.html
• http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052220.html
• http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052502.html
• http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052504.html
• http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00002.html
• http://secunia.com/advisories/42716
• http://secunia.com/advisories/42818
• http://support.avaya.com/css/P8/documents/100124650
• http://www.debian.org/security/2010/dsa-2132
• http://www.mandriva.com/security/advisories?name=MDVSA-2010:251
• http://www.mandriva.com/security/advisories?name=MDVSA-2010:258
• http://www.mozilla.org/security/announce/2010/mfsa2010-74.html
• http://www.redhat.com/support/errata/RHSA-2010-0966.html
• http://www.redhat.com/support/errata/RHSA-2010-0967.html
• http://www.redhat.com/support/errata/RHSA-2010-0968.html
• http://www.redhat.com/support/errata/RHSA-2010-0969.html
• http://www.securityfocus.com/bid/45347
• http://www.securitytracker.com/id?1024846
• http://www.securitytracker.com/id?1024848
• http://www.ubuntu.com/usn/USN-1019-1
• http://www.ubuntu.com/usn/USN-1020-1
• http://www.vupen.com/english/advisories/2011/0030
• https://bugzilla.mozilla.org/show_bug.cgi?id=468563
• https://bugzilla.mozilla.org/show_bug.cgi?id=569162
• https://bugzilla.mozilla.org/show_bug.cgi?id=571995
• https://bugzilla.mozilla.org/show_bug.cgi?id=599166
• https://bugzilla.mozilla.org/show_bug.cgi?id=601699
• https://bugzilla.mozilla.org/show_bug.cgi?id=604843

Affected products (233)

• cpe:2.3:a:mozilla:firefox:3.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.6.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.6.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.6.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.6.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.6.7:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.6.8:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.6.9:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.6.10:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.6.11:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:3.6.12:*:*:*:*:*:*:*
• 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:seamonkey:1.1.12:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:1.1.13:*:*:*:*:*:*:*

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