CVE-2025-27363
CVSS v3
8.1
HIGH
EPSS Score
76.2 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
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.
CISA Known Exploited Vulnerability
- Date Added
- 2025-05-06
- Patch Due Date
- 2025-05-27
- Ransomware Use
- Unknown
Technical details
- Published
- 2025-03-11
Frequently asked questions
What is CVE-2025-27363?
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.
Is CVE-2025-27363 actively exploited?
Yes. CVE-2025-27363 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 5/27/2025.
What is the CVSS score for CVE-2025-27363?
CVE-2025-27363 has a CVSS v3 base score of 8.1 (HIGH severity).
Is CVE-2025-27363 affecting your environment?
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