ZDI-25-1193: (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-2025-15271.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-25-1193?
ZDI-25-1193 is classified as a critical vulnerability due to its ability to allow remote code execution.
How do I fix ZDI-25-1193?
To fix ZDI-25-1193, update to the latest version of FontForge that addresses the vulnerability.
What types of attacks can exploit ZDI-25-1193?
ZDI-25-1193 can be exploited through social engineering methods like visiting malicious web pages or opening compromised files.
Which software is affected by ZDI-25-1193?
ZDI-25-1193 affects installations of FontForge.
Do users need to take any action to exploit ZDI-25-1193?
Yes, user interaction is required for exploiting ZDI-25-1193 by visiting a malicious site or file.