CVE-2025-66034
MEDIUMfontTools <4.60.2 - RCE
Title source: llmDescription
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.
Exploits (9)
nomisec
1 stars
by manbahadurthapa1248 · poc
https://github.com/manbahadurthapa1248/CVE-2025-66034-Poc-to-Get-RCE-for-HTB-VariaType
Scores
CVSS v3
6.3
EPSS
0.0012
EPSS Percentile
31.4%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:L
Details
CWE
CWE-91
Status
published
Products (2)
fonttools/fonttools
4.33.0 - 4.60.2
pypi/fonttools
4.33.0 - 4.60.2PyPI
Published
Nov 29, 2025
Tracked Since
Feb 18, 2026