Meta has warned {that a} safety vulnerability impacting the FreeType open-source font rendering library could have been exploited within the wild.
The vulnerability has been assigned the CVE identifier CVE-2025-27363, and carries a CVSS rating of 8.1, indicating excessive severity. Described as an out-of-bounds write flaw, it may very well be exploited to realize distant code execution when parsing sure font information.
“An out-of-bounds write exists in FreeType variations 2.13.0 and beneath when making an attempt to parse font subglyph buildings associated to TrueType GX and variable font information,” the corporate said in an advisory.
“The weak code assigns a signed brief worth to an unsigned lengthy after which provides a static worth inflicting it to wrap round and allocate too small of a heap buffer. The code then writes as much as 6 signed lengthy integers out of bounds relative to this buffer. This may occasionally end in arbitrary code execution.”
The corporate didn’t share any specifics on how the shortcoming is being exploited, who’s behind it, and the size of the assaults. Nevertheless, it acknowledged that the bug “could have been exploited within the wild.”
When reached for remark, FreeType developer Werner Lemberg advised The Hacker Information {that a} repair for the vulnerability has been integrated for nearly two years. “FreeType variations bigger than 2.13.0 are not affected,” Lemberg stated.
In a separate message posted on the Open Supply Safety mailing checklist oss-security, it has come to mild that a number of Linux distributions are working an outdated model of the library, thus rendering them vulnerable to the flaw. This contains –
- AlmaLinux
- Alpine Linux
- Amazon Linux 2
- Debian secure / Devuan
- RHEL / CentOS Stream / Alma Linux / and many others. 8 and 9
- GNU Guix
- Mageia
- OpenMandriva
- openSUSE Leap
- Slackware, and
- Ubuntu 22.04
In mild of energetic exploitation, customers are really useful to replace their cases to the newest model of FreeType (2.13.3) for optimum safety.
