Search for vulnerabilities
Vulnerability details: VCID-79sq-ck6s-1qc8
Vulnerability ID VCID-79sq-ck6s-1qc8
Aliases CVE-2012-1133
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 (2)
CWE-122 Heap-based Buffer Overflow
CWE-787 Out-of-bounds Write
System Score Found at
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
epss 0.03525 https://api.first.org/data/v1/epss?cve=CVE-2012-1133
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-2012-1133.json
https://api.first.org/data/v1/epss?cve=CVE-2012-1133
662864 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=662864
800591 https://bugzilla.redhat.com/show_bug.cgi?id=800591
CVE-2012-1133 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-1133
mfsa2012-21 https://www.mozilla.org/en-US/security/advisories/mfsa2012-21
USN-1403-1 https://usn.ubuntu.com/1403-1/
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.87203
EPSS Score 0.03525
Published At Aug. 15, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:10:29.203123+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2012/mfsa2012-21.md 37.0.0