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CVE-2025-15276

HighPublished

FontForge SFD File Parsing Deserialization of Untrusted Data Remote Code Execution Vulnerability

Published: Dec 31, 2025
Updated: Dec 31, 2025
Assigning CNA: zdi
Evidence observed: Aug 8, 2026

Primary CVSS

7.8/ 10High

nvd · CVSS 3.0

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS probability estimate

0.4%

Low · next 30 days

Percentile: 29.5%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

CVE-2025-15276-pocPoC
Proof of concept for CVE-2025-15276 - FontForge SFD File Parsing Deserialization of Untrusted Data Remote Code Execution Vulnerability

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