libilbm ILBM File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

November 6th, 2026
ZDI-26-887 ZDI-CAN-27792

CVE ID

CVE-2025-10935

CVSS Score

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

Affected Vendors

libilbm

Affected Products

libilbm

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of libilbm. 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 ILBM 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.

Additional Details

https://github.com/svanderburg/libilbm/commit/fe719677a8267c5ef7a7ff6175219587923ed82c
https://gitlab.gnome.org/GNOME/gimp/-/work_items/14817


Disclosure Timeline

  • 2025-09-02 - Vulnerability reported to vendor
  • 2026-11-06 - Coordinated public release of advisory
  • 2026-11-06 - Advisory Updated

Credit

MICHAEL RANDRIANANTENAINA [https://elkamika.blogspot.com/]

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