CVE-2025-15269
Unknown Unknown - Not Provided

Use-After-Free in FontForge SFD Parsing Enables Remote Code Execution

Vulnerability report for CVE-2025-15269, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2025-12-31

Last updated on: 2025-12-31

Assigner: Zero Day Initiative

Description

FontForge SFD File Parsing Use-After-Free 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 validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-28564.

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Meta Information

Published
2025-12-31
Last Modified
2025-12-31
Generated
2026-07-06
AI Q&A
2025-12-31
EPSS Evaluated
2026-07-05
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
fontforge fontforge *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

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Executive Summary

This vulnerability is a use-after-free flaw in FontForge's parsing of SFD files. It occurs because the software does not properly check if an object exists before operating on it, which can lead to memory corruption. An attacker can exploit this by tricking a user into opening a malicious file or visiting a malicious webpage, allowing the attacker to execute arbitrary code with the user's privileges. [1]

Impact Analysis

If exploited, this vulnerability allows an attacker to execute arbitrary code on your system with the same privileges as the current user. This can lead to unauthorized actions such as installing malware, stealing data, or taking control of your system. [1]

Mitigation Strategies

To mitigate this vulnerability, avoid opening untrusted SFD files or visiting untrusted webpages that might contain malicious FontForge files. Ensure that users are aware of the risk and do not interact with suspicious files or links. Additionally, apply any available patches or updates from FontForge once released to fix the parsing flaw. [1]

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