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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.
Wiz Threat Research note: The Attack Vector aspect of the CVSS of this vulnerability was edited to reflect that exploitation requires since loading a file.
Source: NVD
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