CVE-2012-4191

Name: CVE-2012-4191
Creator: NVD / NIST
Published: 2012-10-12T10:44:20.257+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.87%

Last modified Jun 16, 2026

CVE-2012-4191 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 3.87% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

3.87%

88.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 16.0.1
Mozilla	Seamonkey	< 2.13.1
Mozilla	Thunderbird	< 16.0.1
Canonical	Ubuntu Linux	10.04
Canonical	Ubuntu Linux	11.04
Canonical	Ubuntu Linux	11.10
Canonical	Ubuntu Linux	12.04

References

http://osvdb.org/86125Broken Link
http://secunia.com/advisories/50904Third Party Advisory
http://secunia.com/advisories/50929Third Party Advisory
http://secunia.com/advisories/50984Third Party Advisory
http://www.mozilla.org/security/announce/2012/mfsa2012-88.htmlVendor Advisory
http://www.securitytracker.com/id?1027653Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-1608-1Third Party Advisory
http://www.ubuntu.com/usn/USN-1611-1Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=798045Issue Tracking, Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/79209Third Party Advisory, VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16719Third Party Advisory
http://osvdb.org/86125Broken Link
http://secunia.com/advisories/50904Third Party Advisory
http://secunia.com/advisories/50929Third Party Advisory
http://secunia.com/advisories/50984Third Party Advisory
http://www.mozilla.org/security/announce/2012/mfsa2012-88.htmlVendor Advisory
http://www.securitytracker.com/id?1027653Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-1608-1Third Party Advisory
http://www.ubuntu.com/usn/USN-1611-1Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=798045Issue Tracking, Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/79209Third Party Advisory, VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16719Third Party Advisory

Timeline

Published: Oct 12, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-4191?

How severe is CVE-2012-4191?

Severity scoring for CVE-2012-4191 is pending analysis. The EPSS model estimates a 3.87% probability of exploitation in the next 30 days.

How do I fix CVE-2012-4191?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-4191?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST