CVE-2026-18301
Received Received - Intake

Integer Overflow in GIMP PSD File Parsing Leads to RCE

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: Zero Day Initiative

Description
GIMP PSD File Parsing Integer 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 PSD 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-29395.

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Meta Information

Published
2026-08-20
Last Modified
2026-08-20
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
CVE-2026-18301
EUVD
EUVD-2026-63450

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
gnome gimp *
gnome gimp From 2.10.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-190 The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Attack-Flow Graph

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Executive Summary

This vulnerability is an integer overflow in GIMP that occurs during the parsing of PSD files. It happens because GIMP does not properly validate user-supplied data, leading to an integer overflow before allocating a buffer. Attackers can exploit this to execute arbitrary code on the affected system.

Detection Guidance

Detecting this vulnerability requires checking for outdated GIMP versions. Inspect installed GIMP packages using commands like 'gimp --version' or package managers such as 'dpkg -l gimp' (Debian/Ubuntu) or 'rpm -qa gimp' (RHEL). If the version is below the patched release, the system is vulnerable.

Impact Analysis

If you use GIMP and open a malicious PSD file or visit a malicious page, an attacker could execute arbitrary code on your system. This could allow them to take control of your computer, steal data, or install malware. The impact is high as it affects confidentiality, integrity, and availability.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, which may violate GDPR and HIPAA requirements for data protection and confidentiality. Organizations using GIMP may face compliance risks if exploited, potentially resulting in legal penalties or data breaches.

Mitigation Strategies

Update GIMP to the latest patched version immediately. Disable PSD file parsing if possible or restrict file access to trusted sources. Monitor for suspicious activity or unauthorized code execution.

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