ZDI-CAN-29399: ZDI-26-456: GIMP TIF File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

Published Jul 29, 2026

Updated

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 ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-18303.

Affected Software

1 affected component

GIMP GIMP

Event History

Jul 29, 2026

Advisory Published

via ZDI·05:00 AM

Data Sourced

via ZDI·05:00 AM

Description

Frequently Asked Questions

What is the severity of ZDI-CAN-29399?

ZDI-CAN-29399 has a CVSS rating of 7.8, indicating a high severity risk.

How can I mitigate ZDI-CAN-29399?

To mitigate ZDI-CAN-29399, avoid opening untrusted TIF files or visiting malicious web pages.

What software is affected by ZDI-CAN-29399?

ZDI-CAN-29399 affects GIMP installations that handle TIF file parsing.

Is user interaction required to exploit ZDI-CAN-29399?

Yes, user interaction is required to exploit ZDI-CAN-29399 by opening a malicious file or visiting a malicious site.

What type of vulnerability is ZDI-CAN-29399?

ZDI-CAN-29399 is a stack-based buffer overflow vulnerability that allows remote code execution.