BaseFortify

Publication date: 2025-10-29

Last updated on: 2025-11-04

Assigner: Zero Day Initiative

Description

GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. 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 HDR 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-27803.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-10-29

Last Modified

2025-11-04

Generated

2026-07-06

AI Q&A

2025-10-29

EPSS Evaluated

2026-07-05

NVD

CVE-2025-10921

Affected Vendors & Products

Vendor	Product	Version / Range
debian	debian_linux	11.0
gimp	gimp	3.0.4

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-122	A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is a heap-based buffer overflow in GIMP's HDR file parsing. It occurs because the program does not properly validate the length of user-supplied data before copying it into a heap buffer. This flaw allows remote attackers to execute arbitrary code by tricking a user into opening a malicious HDR file or visiting a malicious page.

Impact Analysis

If exploited, this vulnerability can allow an attacker to execute arbitrary code on your system with the privileges of the GIMP process. This could lead to unauthorized actions such as installing malware, stealing data, or taking control of the affected system. Exploitation requires user interaction, such as opening a malicious file or visiting a malicious webpage.

Mitigation Strategies

To mitigate this vulnerability, avoid opening HDR files from untrusted sources or visiting malicious pages that could exploit the vulnerability. Ensure that your GIMP installation is updated with any patches or security updates released by the vendor addressing this heap-based buffer overflow issue.

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