ZDI-CAN-28543: ZDI-25-1189: (0Day) FontForge SFD File Parsing Heap-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 SFD files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. 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-2025-15275.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-28543?
The severity of ZDI-CAN-28543 is critical due to the potential for remote code execution.
How do I fix ZDI-CAN-28543?
To fix ZDI-CAN-28543, update FontForge to the latest version that addresses the vulnerability.
Who is affected by ZDI-CAN-28543?
Users of FontForge are affected by ZDI-CAN-28543, particularly those using vulnerable versions.
What type of vulnerability is ZDI-CAN-28543?
ZDI-CAN-28543 is identified as a heap-based buffer overflow vulnerability.
Is user interaction required to exploit ZDI-CAN-28543?
Yes, user interaction is required to exploit ZDI-CAN-28543, as the attacker needs the user to open a malicious file.