FontForge GUtils SGI File Parsing Heap-based Buffer Overflow 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 scanlines within SGI files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27920.
Advisories

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Fixes

Solution

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Workaround

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History

Wed, 31 Dec 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 31 Dec 2025 07:15:00 +0000

Type Values Removed Values Added
Description FontForge GUtils SGI File Parsing Heap-based Buffer Overflow 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 scanlines within SGI files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27920.
Title FontForge GUtils SGI File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Weaknesses CWE-122
References
Metrics cvssV3_0

{'score': 7.8, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: zdi

Published:

Updated: 2025-12-31T16:22:17.744Z

Reserved: 2025-12-29T20:02:11.712Z

Link: CVE-2025-15277

cve-icon Vulnrichment

Updated: 2025-12-31T16:22:14.712Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-31T07:15:52.037

Modified: 2025-12-31T20:42:15.637

Link: CVE-2025-15277

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses