CVE-2012-4187

Name: CVE-2012-4187
Creator: NVD / NIST
Published: 2012-10-10T17:55:02.567+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 6.84%

Last modified Jun 16, 2026

CVE-2012-4187 is a vulnerability of currently unknown severity. Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 do not properly manage a certain insPos variable, which allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption and assertion failure) via unspecified vectors.. EPSS estimates a 6.84% chance of exploitation in the next 30 days.

Description

Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 do not properly manage a certain insPos variable, which allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption and assertion failure) via unspecified vectors.

Metrics

EPSS Probability

6.84%

93.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions	Update
Mozilla	Firefox	< 10.0.8	—
Mozilla	Thunderbird Esr	< 10.0.8	—
Mozilla	Firefox	< 16.0	—
Mozilla	Thunderbird	< 16.0	—
Mozilla	Seamonkey	< 2.13	—
Canonical	Ubuntu Linux	10.04	—
Canonical	Ubuntu Linux	11.04	—
Canonical	Ubuntu Linux	11.10	—
Canonical	Ubuntu Linux	12.04	—
Redhat	Enterprise Linux Desktop	5.0	—
Redhat	Enterprise Linux Desktop	6.0	—
Redhat	Enterprise Linux Eus	6.3	—
Redhat	Enterprise Linux Server	5.0	—
Redhat	Enterprise Linux Server	6.0	—
Redhat	Enterprise Linux Workstation	5.0	—
Redhat	Enterprise Linux Workstation	6.0	—
Suse	Linux Enterprise Desktop	10	Sp4
Suse	Linux Enterprise Desktop	11	Sp3
Suse	Linux Enterprise Sdk	10	Sp4
Suse	Linux Enterprise Server	10	Sp4
Suse	Linux Enterprise Server	11	Sp3

References

http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.htmlMailing List, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2012-1351.htmlThird Party Advisory
http://secunia.com/advisories/50856Third Party Advisory
http://secunia.com/advisories/50892Third Party Advisory
http://secunia.com/advisories/50904Third Party Advisory
http://secunia.com/advisories/50935Third Party Advisory
http://secunia.com/advisories/50936Third Party Advisory
http://secunia.com/advisories/50984Third Party Advisory
http://secunia.com/advisories/55318Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2012:163Third Party Advisory
http://www.mozilla.org/security/announce/2012/mfsa2012-86.htmlVendor Advisory
http://www.securityfocus.com/bid/56125Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-1611-1Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=787493Issue Tracking
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16425Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.htmlMailing List, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2012-1351.htmlThird Party Advisory
http://secunia.com/advisories/50856Third Party Advisory
http://secunia.com/advisories/50892Third Party Advisory
http://secunia.com/advisories/50904Third Party Advisory
http://secunia.com/advisories/50935Third Party Advisory
http://secunia.com/advisories/50936Third Party Advisory
http://secunia.com/advisories/50984Third Party Advisory
http://secunia.com/advisories/55318Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2012:163Third Party Advisory
http://www.mozilla.org/security/announce/2012/mfsa2012-86.htmlVendor Advisory
http://www.securityfocus.com/bid/56125Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-1611-1Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=787493Issue Tracking
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16425Third Party Advisory

Timeline

Published: Oct 10, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-4187?

How severe is CVE-2012-4187?

Severity scoring for CVE-2012-4187 is pending analysis. The EPSS model estimates a 6.84% probability of exploitation in the next 30 days.

How do I fix CVE-2012-4187?

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-2012-4187?

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

Scan your code now

Source: NVD / NIST