CVE-2010-3770

CVE-2010-3770 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 4.3. 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-79.

Key facts

• Severity: Medium (CVSS 2.0 base score 4.3)
• EPSS exploit prediction: 4% (90th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-79
• Affected product: Mozilla Firefox
• Published: 2010-12-10
• Last modified: 2026-06-16

Description

Multiple cross-site scripting (XSS) vulnerabilities in the rendering engine in Mozilla Firefox before 3.5.16 and 3.6.x before 3.6.13, and SeaMonkey before 2.0.11, allow remote attackers to inject arbitrary web script or HTML via (1) x-mac-arabic, (2) x-mac-farsi, or (3) x-mac-hebrew characters that may be converted to angle brackets during rendering.

Frequently asked questions

What is CVE-2010-3770?

Multiple cross-site scripting (XSS) vulnerabilities in the rendering engine in Mozilla Firefox before 3.5.16 and 3.6.x before 3.6.13, and SeaMonkey before 2.0.11, allow remote attackers to inject arbitrary web script or HTML via (1) x-mac-arabic, (2) x-mac-farsi, or (3) x-mac-hebrew characters that may be converted to angle brackets during rendering.

How severe is CVE-2010-3770?

CVE-2010-3770 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2010-3770 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-3770?

CVE-2010-3770 primarily affects Mozilla Firefox. In total, 173 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-3770?

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

When was CVE-2010-3770 published?

CVE-2010-3770 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/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.mozilla.org/security/announce/2010/mfsa2010-84.html
• http://www.redhat.com/support/errata/RHSA-2010-0966.html
• http://www.securityfocus.com/bid/45353
• http://www.securitytracker.com/id?1024851
• http://www.ubuntu.com/usn/USN-1019-1
• http://www.vupen.com/english/advisories/2011/0030
• https://bugzilla.mozilla.org/show_bug.cgi?id=601429
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12348

Affected products (173)

• 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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