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. Was ZDI-CAN-28563.
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 | Apr 13, 2026 | Apr 6, 2026 |
| Amazon Linux Ami 2 | — | Upgrade fontforgeUpgrade fontforge-develUpgrade fontforge-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade fontforge-docUpgrade fontforge-debuginfoUpgrade fontforge-develUpgrade fontforge-debugsourceUpgrade fontforge | Feb 20, 2026 | Dec 31, 2025 |
| Oracle_linux | — | Upgrade fontforge | Apr 22, 2026 | Dec 31, 2025 |
| Redhat_linux | — | Upgrade fontforge-debugsourceUpgrade fontforge-debuginfoUpgrade fontforgeNo solution exists | Apr 7, 2026 | Dec 31, 2025 |
| Rocky_linux | — | Upgrade fontforge-debuginfoUpgrade fontforgeUpgrade fontforge-debugsource | Apr 10, 2026 | Apr 9, 2026 |
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