CVE-2026-18308
Received Received - Intake

GIMP TIF File Parsing Integer Overflow RCE

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: Zero Day Initiative

Description
GIMP TIF 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 TIF 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-29405.

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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-2026-18308
EUVD
EUVD-2026-63457

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
gnome gimp *
gnome gimp to 2.10.34 (inc)
gnome gimp From 2.10.0 (inc) to 2.10.30 (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 issue in GIMP's TIF file parsing functionality. It occurs due to insufficient validation of user-supplied data, leading to an integer overflow before buffer allocation. This can allow remote attackers to execute arbitrary code on affected GIMP installations if a user opens a malicious file or visits a malicious page.

Detection Guidance

Detection primarily involves monitoring for suspicious TIF file processing in GIMP. Check GIMP version against the patched release. Inspect network traffic for TIF file downloads from untrusted sources. Enable application logging for GIMP to track file parsing errors.

Impact Analysis

If exploited, this vulnerability can allow attackers to run arbitrary code on your system with the same privileges as the GIMP process. This could lead to unauthorized access, data theft, or system compromise. User interaction is required, meaning you must open a malicious file or visit a malicious page for the attack to succeed.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information. Organizations affected by this flaw may face compliance violations, legal penalties, and reputational damage if exploited.

Mitigation Strategies

Update GIMP to the latest patched version immediately. Avoid opening TIF files from untrusted sources. Disable automatic opening of TIF files in GIMP if possible. Monitor for unusual system behavior after file processing.

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