# CVE-2025-27363: FreeType Out-of-Bounds Write Vulnerability

Source: https://junglewise.ai/threats/cve-2025-27363-freetype-out-of-bounds-write-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-05-06. Updated: 2026-05-09  
License: CC BY 4.0 with a link back

CVE-2025-27363 · Severity: critical · CVSS 8.1 · Exploited in the wild · Published 2025-05-06

FreeType contains an out-of-bounds write vulnerability when parsing font subglyph structures in TrueType GX and variable font files. An integer wrap-around during heap buffer allocation allows for up to six signed long integers to be written out of bounds, potentially leading to arbitrary code execution.

Technologies: [FreeType](https://junglewise.ai/threats/technologies/freetype). Vendors: [Freetype](https://junglewise.ai/threats/vendors/freetype).

## Quick answers

**Is CVE-2025-27363 exploited in the wild?** Yes. CVE-2025-27363 is known to be exploited in the wild, first recorded on 6 May 2025. Treat it as urgent.

**How severe is CVE-2025-27363?** Critical severity, with a CVSS score of 8.1, published 6 May 2025.

**Which products and versions are affected?** FreeType Project FreeType 2.13.0 and below.

**Is there a fix for CVE-2025-27363?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2025-27363 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2025-27363?** Check whether you run FreeType. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- FreeType Project FreeType 2.13.0 and below

## Timeline

- 2025-05-06: disclosed
- 2025-05-06: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.
- 2025-05-06: exploited: Reported as exploited in the wild.

## Related threats

- [FreeType ttcolr.c integer overflow in tt_face_colr_blend_layer](https://junglewise.ai/threats/cve-2026-49919-freetype-ttcolr-c-integer-overflow-in-tt-face-colr-blend-layer)