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Vulnerability record · CVE-2012-3995 · published 10 October 2012

CVE-2012-3995: Mozilla firefox out-of-bounds read vulnerability

Mozilla · Firefox

The IsCSSWordSpacingSpace function in 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 allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds read) via unspecified vectors.

9.3 CVSS 2.0 High EPSS 5.0% · top 8.0% CWE-125 · Out-of-bounds read
9.3CVSS 2.0 base score
5.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
12Affected product versions listed by NVD
32References
16 Jun 2026Last modified by NVD

Description

The IsCSSWordSpacingSpace function in 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 allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds read) via unspecified vectors.

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

Affected products

12 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2012-1351.html Third Party Advisory
http://secunia.com/advisories/50856 Third Party Advisory
http://secunia.com/advisories/50892 Third Party Advisory
http://secunia.com/advisories/50904 Third Party Advisory
http://secunia.com/advisories/50935 Third Party Advisory
http://secunia.com/advisories/50936 Third Party Advisory
http://secunia.com/advisories/50984 Third Party Advisory
http://secunia.com/advisories/55318 Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2012:163 Third Party Advisory
http://www.mozilla.org/security/announce/2012/mfsa2012-85.html Vendor Advisory
http://www.securityfocus.com/bid/56136 Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-1611-1 Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=765621 Issue TrackingVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/79156 Third Party AdvisoryVDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16808 Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2012-1351.html Third Party Advisory
http://secunia.com/advisories/50856 Third Party Advisory
http://secunia.com/advisories/50892 Third Party Advisory
http://secunia.com/advisories/50904 Third Party Advisory
http://secunia.com/advisories/50935 Third Party Advisory
http://secunia.com/advisories/50936 Third Party Advisory
http://secunia.com/advisories/50984 Third Party Advisory
http://secunia.com/advisories/55318 Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2012:163 Third Party Advisory
http://www.mozilla.org/security/announce/2012/mfsa2012-85.html Vendor Advisory
http://www.securityfocus.com/bid/56136 Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-1611-1 Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=765621 Issue TrackingVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/79156 Third Party AdvisoryVDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16808 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2012-3995), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.