Vulnerabilities > CVE-2025-27363
Attack vector
NETWORK Attack complexity
HIGH Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
An out of bounds write exists in FreeType versions 2.13.0 and below (newer versions of FreeType are not vulnerable) when attempting to parse font subglyph structures related to TrueType GX and variable font files. The vulnerable code assigns a signed short value to an unsigned long and then adds a static value causing it to wrap around and allocate too small of a heap buffer. The code then writes up to 6 signed long integers out of bounds relative to this buffer. This may result in arbitrary code execution. This vulnerability may have been exploited in the wild.
Vulnerable Configurations
Related news
- Meta Warns of FreeType Vulnerability (CVE-2025-27363) With Active Exploitation Risk (source)
- Google Fixes Actively Exploited Android System Flaw in May 2025 Security Update (source)
- Update ASAP: Google Fixes Android Flaw (CVE-2025-27363) Exploited by Attackers (source)
- Actively exploited FreeType flaw fixed in Android (CVE-2025-27363) (source)
References
- http://www.openwall.com/lists/oss-security/2025/03/13/1
- http://www.openwall.com/lists/oss-security/2025/03/13/11
- http://www.openwall.com/lists/oss-security/2025/03/13/12
- http://www.openwall.com/lists/oss-security/2025/03/13/2
- http://www.openwall.com/lists/oss-security/2025/03/13/3
- http://www.openwall.com/lists/oss-security/2025/03/13/8
- http://www.openwall.com/lists/oss-security/2025/03/14/1
- http://www.openwall.com/lists/oss-security/2025/03/14/2
- http://www.openwall.com/lists/oss-security/2025/03/14/3
- http://www.openwall.com/lists/oss-security/2025/03/14/4
- http://www.openwall.com/lists/oss-security/2025/05/06/3
- https://lists.debian.org/debian-lts-announce/2025/03/msg00030.html
- https://source.android.com/docs/security/bulletin/2025-05-01
- https://www.facebook.com/security/advisories/cve-2025-27363