Heap-based Buffer Overflow in FontForge Allows Remote Code Execution

CVE-2025-15279

What is CVE-2025-15279?

The vulnerability in FontForge relates to improper handling of BMP file parsing, allowing attackers to exploit a heap-based buffer overflow. By manipulating the pixel data, an attacker can execute arbitrary code if the user visits a malicious page or opens an infected BMP file. The lack of rigorous checks on the length of data being copied into a heap buffer presents a significant risk, as it enables remote code execution in the context of the logged-in user. To mitigate this risk, it's crucial to ensure users are cautious about the sources of files they open.

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