Bug 2426428 (CVE-2025-15273)

Summary: CVE-2025-15273 fontforge: FontForge: Remote Code Execution via PFB File Parsing Stack-based Buffer Overflow
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in FontForge. This stack-based buffer overflow vulnerability occurs during the parsing of PFB (Printer Font Binary) files due to improper validation of user-supplied data length. A remote attacker could exploit this by convincing a user to open a specially crafted malicious PFB file, leading to arbitrary code execution in the context of the current user.
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Bug Depends On: 2426584, 2426587    
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Description OSIDB Bzimport 2025-12-31 08:01:41 UTC 
FontForge PFB File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of FontForge. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of PFB files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28546.