Detections
Analytics
CVE-2025-66034
critical
Description
fontTools is a library for manipulating fonts, written in Python. In versions from 4.33.0 to before 4.60.2, the fonttools varLib (or python3 -m fontTools.varLib) script has an arbitrary file write vulnerability that leads to remote code execution when a malicious .designspace file is processed. The vulnerability affects the main() code path of fontTools.varLib, used by the fonttools varLib CLI and any code that invokes fontTools.varLib.main(). This issue has been patched in version 4.60.2.
References
https://github.com/PrakharNagpal/Autopatch
https://github.com/arcovaar3428/Fsociety00_alderson_core.dat
https://github.com/V0idW1re/HTB-VariaType-Writeup
https://github.com/jwsly12/CVE-2025-66034-htb-ctf
https://github.com/OdanBroder/CVE-Collection
https://github.com/fsoc-ghost-0x/Fsociety00_alderson_core.dat
https://github.com/v3cn4x00/POC-CVE-2025-66034
https://github.com/d0x-awrqxavc/CVE-2025-66034
https://github.com/tristanqtn/CVE-2025-66034
https://github.com/manbahadurthapa1248/CVE-2025-66034-Poc-to-Get-RCE-for-HTB-VariaType
https://github.com/secopssite/HTB
https://github.com/fonttools/fonttools/security/advisories/GHSA-768j-98cg-p3fv
https://github.com/fonttools/fonttools/commit/a696d5ba93270d5954f98e7cab5ddca8a02c1e32