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Vulnerability details: VCID-1bv8-ra2a-e3hz
Vulnerability ID VCID-1bv8-ra2a-e3hz
Aliases CVE-2012-1143
Summary Mateusz Jurczyk of the Google Security Team used the Address Sanitizer tool to discover a series of memory safety bugs in the FreeType library, some of which could cause memory corruption and exploitable crashes with certain fonts and font parsing. Firefox Mobile has been upgraded to FreeType version 2.4.9 which addresses these issues. Desktop Firefox does not use Freetype for fonts and was not affected. On Linux systems, Firefox will use the installed system library for FreeType. Linux users should make sure they are current on system security updates.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-369 Divide By Zero
System Score Found at
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
epss 0.02148 https://api.first.org/data/v1/epss?cve=CVE-2012-1143
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2012-21
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2012-1143.json
https://api.first.org/data/v1/epss?cve=CVE-2012-1143
662864 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=662864
800606 https://bugzilla.redhat.com/show_bug.cgi?id=800606
CVE-2012-1143 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-1143
mfsa2012-21 https://www.mozilla.org/en-US/security/advisories/mfsa2012-21
RHSA-2012:0467 https://access.redhat.com/errata/RHSA-2012:0467
USN-1403-1 https://usn.ubuntu.com/1403-1/
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.83547
EPSS Score 0.02148
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:10:29.447048+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2012/mfsa2012-21.md 37.0.0