CVE-2025-15271

High

Published: 31 December 2025

Published

31 December 2025

Modified

07 January 2026

KEV Added

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Patch

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CVSS Score v3 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Score 0.0058 43.2th percentile

Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2025-15271 is a high-severity Improper Validation of Array Index (CWE-129) vulnerability in Fontforge Fontforge. Its CVSS base score is 8.8 (High).

Operationally, ranked at the 43.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-205896

Vulnerability details

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-28562.