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Vulnerability details: VCID-uweh-5m2b-1fgz
Vulnerability ID VCID-uweh-5m2b-1fgz
Aliases CVE-2012-1128
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-476 NULL Pointer Dereference
System Score Found at
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
epss 0.02697 https://api.first.org/data/v1/epss?cve=CVE-2012-1128
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-2012-1128.json
https://api.first.org/data/v1/epss?cve=CVE-2012-1128
662864 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=662864
800584 https://bugzilla.redhat.com/show_bug.cgi?id=800584
CVE-2012-1128 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-1128
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 0.85293
EPSS Score 0.02697
Published At Aug. 17, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:10:29.077183+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2012/mfsa2012-21.md 37.0.0