CVE-2025-27363 - FreeType FreeType
AI Vulnerability ContextAn 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 lo...
Overview
A source-backed snapshot of this vulnerability.
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.
Vulnerability status
How serious this vulnerability is and whether it is known to be exploited.
- CVE ID
- CVE-2025-27363
- Vendor/project
- FreeType
- Product
- FreeType
- Vulnerability name
- FreeType Out-of-Bounds Write Vulnerability
- Date added
- 2025-05-06
- Due date
- 2025-05-27
- Known ransomware campaign use
- Unknown
- CVSS v3
- 8.1
Exploit context
What the vulnerability is about.
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.
Source evidence
Original public records and references for this page.
Original source
Original source links
Open the public records and source datasets used for this page.