CVE-2025-27363
HIGH CISA KEVCVSS v3.1: 8.1 · EPSS: 0.6344 (98.4 percentile) · CISA KEV: Yes
Source data as of:
At a glance
- Severity
- HIGH
- CVSS
- 8.1 v3.1 · NVD
- EPSS
- 0.6344 (98.4 percentile) · FIRST.org
- CISA KEV
- Yes KEV added: 2025-05-06
- Type
- Out-of-bounds Write · NVD CWE
- Attack conditions (CVSS vector)
- NetworkNo privilegesNo user interaction · Source: NVD Vector
- Affected vendors
- freetype, debian
- Published
- 2025-03-11 · Modified: 2026-04-16
- References
- Jump to references (8)
CVSS / EPSS / KEV
Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources
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.
References
Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.
- Vendor advisory https://www.facebook.com/security/advisories/cve-2025-27363
- Reference http://www.openwall.com/lists/oss-security/2025/03/13/1
- Reference http://www.openwall.com/lists/oss-security/2025/03/13/11
- Reference http://www.openwall.com/lists/oss-security/2025/03/13/12
- Reference http://www.openwall.com/lists/oss-security/2025/03/13/2
- Reference http://www.openwall.com/lists/oss-security/2025/03/13/3
- Reference http://www.openwall.com/lists/oss-security/2025/03/13/8
- Reference http://www.openwall.com/lists/oss-security/2025/03/14/1