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

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. 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.

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