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CVE-2013-0757

74
FAUCET Score

CVE-2013-0757 describes a critical vulnerability in Mozilla Firefox, Thunderbird, and SeaMonkey versions prior to 18.0, 17.0.2, and 2.15 respectively. This flaw in the Chrome Object Wrapper (COW) implementation allows remote attackers to execute arbitrary JavaScript code with chrome privileges by manipulating Object.prototype.__proto__ in a specially crafted HTML document. The vulnerability carries a CVSS score of 9.3, indicating high severity with network-based attacks, medium complexity, and complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, exploit code, including a Metasploit module, is publicly available, though there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 17.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 18.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 2.15CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
< 17.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
< 17.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird_esr:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
60.86%
Probability of exploitation in next 30 days
EPSS Percentile
99.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: Firefox 17.0.1 Flash Privileged Code Injection · Jan 8, 2013
ExploitDB: EDB-41684 · Dec 18, 2014
This CVE's current EPSS score of 0.6086 is in the 99th percentile among its peer group of 8,918 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

mozillapatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2013-0757Critical

Mozilla: Chrome Object Wrapper (COW) bypass through changing prototype (MFSA 2013-14)

Jan 8, 2013

References

lists.opensuse.org / opensuse-security-announce/2013-01/msg00006.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2013-01/msg00007.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2013-01/msg00010.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2013-01/msg00017.html
Third Party Advisory
bugzilla.mozilla.org / show_bug.cgi
ExploitIssue TrackingPatchVendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16939
Third Party Advisory
mozilla.org / security/announce/2013/mfsa2013-14.html
Vendor Advisory
ubuntu.com / usn/USN-1681-1
Third Party Advisory
ubuntu.com / usn/USN-1681-2
Third Party Advisory
ubuntu.com / usn/USN-1681-4
Third Party Advisory