CVE-2012-4191
HIGH · CVSS 9.3EPSS 3.9%EU EUVD
The mozilla::net::FailDelayManager::Lookup function in the WebSockets implementation in Mozilla Firefox before 16.0.1, Thunderbird before 16.0.1, and SeaMonkey before 2.13.1 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.
Key facts
- CVSS score
- 9.3 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:M/Au:N/C:C/I:C/A:C- Weakness (CWE)
- CWE-787
- EPSS score
- 3.9% (90th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2012-4135)
- Published
- October 12, 2012
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2012-4135 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- canonical / ubuntu linux
- canonical / ubuntu linux
- canonical / ubuntu linux
- canonical / ubuntu linux
- mozilla / firefox
- mozilla / seamonkey
- mozilla / thunderbird
References
- http://osvdb.org/86125(Broken Link)
- http://secunia.com/advisories/50904(Third Party Advisory)
- http://secunia.com/advisories/50929(Third Party Advisory)
- http://secunia.com/advisories/50984(Third Party Advisory)
- http://www.mozilla.org/security/announce/2012/mfsa2012-88.html(Vendor Advisory)
- http://www.securitytracker.com/id?1027653(Third Party Advisory, VDB Entry)
- http://www.ubuntu.com/usn/USN-1608-1(Third Party Advisory)
- http://www.ubuntu.com/usn/USN-1611-1(Third Party Advisory)
- https://bugzilla.mozilla.org/show_bug.cgi?id=798045(Issue Tracking, Patch, Vendor Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/79209(Third Party Advisory, VDB Entry)
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16719(Third Party Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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