Facebook is warning that a FreeType vulnerability in all versions up to 2.13 can lead to arbitrary code execution, with reports that the flaw has been exploited in attacks.

FreeType is a popular open-source font rendering library used to display text and programmatically add text to images. It provides functionality to load, rasterize, and render fonts in various formats, such as TrueType (TTF), OpenType (OTF), and others.

The library is installed in millions of systems and services, including Linux, Android, game engines, GUI frameworks, and online platforms.