CVE-2025-66034 - fontTools is Vulnerable to Arbitrary File Write and XML injection in fontTools.v...

CVE-2025-66034 - fontTools is Vulnerable to Arbitrary File Write and XML injection in fontTools.v...

CVE ID : CVE-2025-66034 Published : Nov. 29, 2025, 1:16 a.m. | 1 hour, 15 minutes ago 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. Severity: 6.3 | MEDIUM Visit the link for more details, such as CVSS details, affected products, timeline, and more...

CVE Details

Severity
MEDIUM
Published
Nov. 29, 2025
Affected Product: Python
Impact: remote code execution

Source: Telegram CVE Monitor