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Vulnerability DatabaseCVE-2025-66034

CVE-2025-66034: 
Python vulnerability analysis and mitigation

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.

Source: NVD

Related Python vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-66423HIGH7.1
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CVE-2025-66424MEDIUM6.5
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CVE-2025-66221MEDIUM6.3
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CVE-2025-66034MEDIUM6.3
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CVE-2025-66422MEDIUM4.3
  • PythonPython
  • tryton-server
NoYesNov 30, 2025

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