Vulnerability Database

309,614

Total vulnerabilities in the database

CVE-2025-66034

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.

  • Published: Nov 29, 2025
  • Updated: Nov 30, 2025
  • CVE: CVE-2025-66034
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 6.3
  • AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:L

CWEs:

OWASP TOP 10:

No affected software listed.