Is CVE-2012-3985 being actively exploited?

CVE-2012-3985 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2012-3985?

CVE-2012-3985 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2012-3985

MEDIUM · CVSS 4.3EPSS 1.9%EU EUVD

Mozilla Firefox before 16.0, Thunderbird before 16.0, and SeaMonkey before 2.13 do not properly implement the HTML5 Same Origin Policy, which allows remote attackers to conduct cross-site scripting (XSS) attacks by leveraging initial-origin access after document.domain has been set.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness (CWE): CWE-79
EPSS score: 1.9% (80th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2012-3929)
Published: October 10, 2012
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2012-3929 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
mozilla / firefox
mozilla / seamonkey
mozilla / thunderbird
suse / linux enterprise desktop
suse / linux enterprise desktop
suse / linux enterprise server
suse / linux enterprise server
suse / linux enterprise server

Certified products that may be affected

2 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

SUSE Linux Enterprise Server 11 Service Pack 2 on IBM System z - SUSE Linux Products Gmbh - Common Criteria BSI-DSZ-CC-0852-2013 - archived
SUSE Linux Enterprise Server 11 Service Pack 2 including KVM virtualization - SUSE Linux Products Gmbh - Common Criteria BSI-DSZ-CC-0787-2013 - archived

References

http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.html(Mailing List, Third Party Advisory)
http://osvdb.org/86106(Broken Link)
http://secunia.com/advisories/50856(Broken Link)
http://secunia.com/advisories/50892(Broken Link)
http://secunia.com/advisories/50904(Broken Link)
http://secunia.com/advisories/50935(Broken Link)
http://secunia.com/advisories/50984(Broken Link)
http://www.mozilla.org/security/announce/2012/mfsa2012-76.html(Vendor Advisory)
http://www.ubuntu.com/usn/USN-1611-1(Third Party Advisory)
https://bugzilla.mozilla.org/show_bug.cgi?id=655649(Issue Tracking, Vendor Advisory)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16108(Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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