Heap-based Buffer Overflow in FontForge GUtils SGI File Parsing

CVE-2025-15277

What is CVE-2025-15277?

A vulnerability exists in FontForge's GUtils SGI file parsing that can lead to a heap-based buffer overflow. This flaw arises from insufficient validation of user-supplied data lengths before copying data to a heap buffer, allowing remote attackers to execute arbitrary code. The exploitation requires user interaction, typically by visiting a malicious webpage or opening a compromised file. Organizations using FontForge should take immediate precautions to secure their installations against this vulnerability.

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