CVE-2025-15276 FontForge SFD File Parsing Deserialization of Untrusted Data Remote Code Execution Vulnerability
Remote attackers can execute arbitrary code by tricking users into opening malicious SFD files in FontForge due to unsafe deserialization.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-15276?
CVE-2025-15276 is a high-severity unsafe deserialization vulnerability in FontForge, published on 31 Dec 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
FontForge SFD File Parsing Deserialization of Untrusted Data 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 deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28198.
Weakness: CWE-502
Which versions are affected by CVE-2025-15276?
It affects 1 product.
Products include Fontforge Fontforge.
How do I fix CVE-2025-15276?
No fix has been published for CVE-2025-15276 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-15276 being exploited?
There is no known exploitation of CVE-2025-15276 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in FontForge
- CVE-2019-15785 Memory corruption in n/a
- CVE-2025-15269 FontForge SFD File Parsing Use-After-Free Remote Code Execution Vulnerability
- CVE-2025-15270 FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability
- CVE-2025-15271 FontForge SFD File Parsing Improper Validation of Array Index Remote Code Execution Vulnerability
- CVE-2025-15272 FontForge SFD File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Sources
Also known as DEBIAN-CVE-2025-15276, GHSA-mv95-mmh4-gvp6, MINI-v3g6-fvxx-386c, UBUNTU-CVE-2025-15276.