Fontforge: Security Vulnerabilities
FontForge SFD File Parsing Use-After-Free 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 validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28564.
CVSS Score
8.8
EPSS Score
0.005
Published
2025-12-31
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 Score
8.8
EPSS Score
0.003
Published
2025-12-31
FontForge v20230101 was discovered to contain a memory leak via the utf7toutf8_copy function at /fontforge/sfd.c.
CVSS Score
6.5
EPSS Score
0.0
Published
2025-10-23
FontForge v20230101 was discovered to contain a memory leak via the component DlgCreate8.
CVSS Score
6.5
EPSS Score
0.0
Published
2025-10-23
Splinefont in FontForge through 20230101 allows command injection via crafted filenames.
CVSS Score
4.2
EPSS Score
0.0
Published
2024-02-26
Splinefont in FontForge through 20230101 allows command injection via crafted archives or compressed files.
CVSS Score
6.5
EPSS Score
0.016
Published
2024-02-26
An out-of-bounds write flaw was found in FontForge in versions before 20200314 while parsing SFD files containing certain LayerCount tokens. This flaw allows an attacker to manipulate the memory allocated on the heap, causing the application to crash or execute arbitrary code. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
CVSS Score
8.8
EPSS Score
0.008
Published
2021-02-23
FontForge 20190801 has a heap-based buffer overflow in the Type2NotDefSplines() function in splinesave.c.
CVSS Score
8.8
EPSS Score
0.002
Published
2020-01-03
FontForge 20190801 has a use-after-free in SFD_GetFontMetaData in sfd.c.
CVSS Score
8.8
EPSS Score
0.003
Published
2020-01-03
FontForge 20190813 through 20190820 has a buffer overflow in PrefsUI_LoadPrefs in prefs.c.
CVSS Score
9.8
EPSS Score
0.006
Published
2019-08-29