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.
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:6628 https://access.redhat.com/errata/RHSA-2026:6628
This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:6631 https://access.redhat.com/errata/RHSA-2026:6631
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.6 Extended Update Support Via RHSA-2026:6635 https://access.redhat.com/errata/RHSA-2026:6635
This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Extended Update Support Via RHSA-2026:7001 https://access.redhat.com/errata/RHSA-2026:7001
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:7677 https://access.redhat.com/errata/RHSA-2026:7677
This issue has been addressed in the following products: Red Hat Enterprise Linux 10.0 Extended Update Support Via RHSA-2026:8875 https://access.redhat.com/errata/RHSA-2026:8875