Is CVE-2013-0773 being actively exploited?

CVE-2013-0773 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2013-0773?

CVE-2013-0773 has a CVSS 2.0 base score of 9.3 (HIGH).

CVE-2013-0773

HIGH · CVSS 9.3EPSS 2.4%EU EUVD

The Chrome Object Wrapper (COW) and System Only Wrapper (SOW) implementations in Mozilla Firefox before 19.0, Firefox ESR 17.x before 17.0.3, Thunderbird before 17.0.3, Thunderbird ESR 17.x before 17.0.3, and SeaMonkey before 2.16 do not prevent modifications to a prototype, which allows remote attackers to obtain sensitive information from chrome objects or possibly execute arbitrary JavaScript code with chrome privileges via a crafted web site.

Key facts

CVSS score: 9.3 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS score: 2.4% (84th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2013-0784)
Published: February 19, 2013
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-0784 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
debian / debian linux
mozilla / firefox
mozilla / seamonkey
mozilla / thunderbird
mozilla / thunderbird esr
opensuse / opensuse
opensuse / opensuse
opensuse / opensuse

References

http://lists.opensuse.org/opensuse-security-announce/2013-02/msg00017.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-updates/2013-02/msg00062.html(Mailing List, Third Party Advisory)
http://www.debian.org/security/2013/dsa-2699(Third Party Advisory)
http://www.mozilla.org/security/announce/2013/mfsa2013-24.html(Vendor Advisory)
http://www.ubuntu.com/usn/USN-1729-1(Third Party Advisory)
http://www.ubuntu.com/usn/USN-1729-2(Third Party Advisory)
http://www.ubuntu.com/usn/USN-1748-1(Third Party Advisory)
https://bugzilla.mozilla.org/show_bug.cgi?id=809652(Issue Tracking, Patch, Vendor Advisory)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16861(Third Party Advisory)

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

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