ZDI-CAN-28563: ZDI-25-1194: (0Day) FontForge SFD File Parsing Improper Validation of Array Index 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 SFD files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated array. An attacker can leverage this vulnerability to execute code in the context of the current user.
Other sources
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 ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2025-15270.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-28563?
The severity of ZDI-CAN-28563 is high as it allows remote attackers to execute arbitrary code on affected installations of FontForge.
How do I fix ZDI-CAN-28563?
To fix ZDI-CAN-28563, update FontForge to the latest version where the vulnerability is patched.
What type of vulnerability is ZDI-CAN-28563?
ZDI-CAN-28563 is a remote code execution vulnerability that requires user interaction to exploit.
What may trigger the ZDI-CAN-28563 vulnerability?
The ZDI-CAN-28563 vulnerability can be triggered by a user visiting a malicious page or opening a malicious file.
What software is affected by ZDI-CAN-28563?
ZDI-CAN-28563 affects installations of FontForge.