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. Was ZDI-CAN-28543.
CVSS Details
- CVSS 3.0 Base Score: 8.8
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade fontforge | Feb 10, 2026 | Feb 5, 2026 |
| Amazon Linux Ami 2 | — | Upgrade fontforge-debuginfoUpgrade fontforge-develUpgrade fontforge | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade fontforgeUpgrade fontforge-debugsourceUpgrade fontforge-develUpgrade fontforge-docUpgrade fontforge-debuginfo | Feb 10, 2026 | Dec 31, 2025 |
| Oracle_linux | — | Upgrade fontforge | Feb 9, 2026 | Dec 31, 2025 |
| Redhat_linux | — | Upgrade fontforge-develUpgrade fontforge-debugsourceUpgrade fontforge-debuginfoUpgrade fontforgeNo solution exists | Feb 10, 2026 | Dec 31, 2025 |
| Rocky_linux | — | Upgrade fontforge-debuginfoUpgrade fontforge-debugsourceUpgrade fontforge | Feb 9, 2026 | Feb 7, 2026 |
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