GIMP TIF File Parsing Integer Overflow Remote Code Execution Vulnerability

July 29th, 2026
ZDI-26-458 ZDI-CAN-29406

CVE ID

CVE-2026-18305

CVSS Score

7.8 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

GIMP

Affected Products

GIMP

Vulnerability Details

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.

Additional Details

GIMP has issued an update to correct this vulnerability. More details can be found at:
https://gitlab.gnome.org/GNOME/gimp/-/commit/0a45a2b51b877829ef523131b50c0eb2a933b8a1

Disclosure Timeline

  • 2026-04-17 - Vulnerability reported to vendor
  • 2026-07-29 - Coordinated public release of advisory
  • 2026-07-29 - Advisory Updated

Credit

Anonymous

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