FontForge GUtils XBM File Parsing Integer 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 pixels within XBM files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27865.
History

Wed, 07 Jan 2026 16:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:fontforge:fontforge:20251009:*:*:*:*:*:*:*

Mon, 05 Jan 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Fontforge
Fontforge fontforge
Vendors & Products Fontforge
Fontforge fontforge

Thu, 01 Jan 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

threat_severity

Important


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 XBM File Parsing Integer 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 pixels within XBM files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27865.
Title FontForge GUtils XBM File Parsing Integer Overflow Remote Code Execution Vulnerability
Weaknesses CWE-190
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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: zdi

Published: 2025-12-31T06:59:33.188Z

Updated: 2025-12-31T16:19:54.162Z

Reserved: 2025-12-29T20:02:16.884Z

Link: CVE-2025-15278

cve-icon Vulnrichment

Updated: 2025-12-31T16:19:51.528Z

cve-icon NVD

Status : Analyzed

Published: 2025-12-31T07:15:52.193

Modified: 2026-01-07T16:01:03.727

Link: CVE-2025-15278

cve-icon Redhat

Severity : Important

Publid Date: 2025-12-31T06:59:33Z

Links: CVE-2025-15278 - Bugzilla