Is CVE-2012-4205 being actively exploited?

CVE-2012-4205 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2012-4205?

CVE-2012-4205 has a CVSS 2.0 base score of 6.8 (MEDIUM).

CVE-2012-4205

MEDIUM · CVSS 6.8EPSS 1.6%EU EUVD

Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 assign the system principal, rather than the sandbox principal, to XMLHttpRequest objects created in sandboxes, which allows remote attackers to conduct cross-site request forgery (CSRF) attacks or obtain sensitive information by leveraging a sandboxed add-on.

Key facts

CVSS score: 6.8 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness (CWE): CWE-352
EPSS score: 1.6% (76th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2012-4149)
Published: November 21, 2012
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2012-4149 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
opensuse / opensuse
opensuse / opensuse
opensuse / opensuse
suse / linux enterprise desktop
suse / linux enterprise desktop
suse / linux enterprise server
suse / linux enterprise server
suse / linux enterprise server
suse / linux enterprise software development kit
suse / linux enterprise software development kit

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/2012-11/msg00021.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00022.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-updates/2012-11/msg00090.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-updates/2012-11/msg00092.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-updates/2012-11/msg00093.html(Mailing List, Third Party Advisory)
http://secunia.com/advisories/51369(Broken Link)
http://secunia.com/advisories/51370(Broken Link)
http://secunia.com/advisories/51381(Broken Link)
http://secunia.com/advisories/51434(Broken Link)
http://secunia.com/advisories/51439(Broken Link)
http://secunia.com/advisories/51440(Broken Link)
http://www.mozilla.org/security/announce/2012/mfsa2012-97.html(Vendor Advisory)
http://www.securityfocus.com/bid/56621(Third Party Advisory, VDB Entry)
http://www.ubuntu.com/usn/USN-1636-1(Third Party Advisory)
http://www.ubuntu.com/usn/USN-1638-1(Third Party Advisory)
http://www.ubuntu.com/usn/USN-1638-2(Third Party Advisory)
http://www.ubuntu.com/usn/USN-1638-3(Third Party Advisory)
https://bugzilla.mozilla.org/show_bug.cgi?id=779821(Issue Tracking, Vendor Advisory)
https://exchange.xforce.ibmcloud.com/vulnerabilities/80175(Third Party Advisory, VDB Entry)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16965(Third Party Advisory)

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

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