CVE-2026-66757

MediumCVSS 5.5/10Last modified Nov 5, 2026

Description

A flaw was found in the file-sgi plugin in GIMP. When processing an RLE-compressed SGI image, the plugin allocates memory for a row table. The image header dimensions (ysize and zsize) are read as 16-bit unsigned integers. If a crafted file sets both dimensions to their maximum value (65535), the multiplication ysize * zsize overflows the standard 32-bit int boundary before being passed to calloc. This integer overflow issue results in undefined behavior, aborting the plugin and causing a denial of service.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-190

Affected software

Vendor	Product	Versions
GNOME	GIMP	—
Red Hat	Red Hat Enterprise Linux 6	—
Red Hat	Red Hat Enterprise Linux 7	—
Red Hat	Red Hat Enterprise Linux 8	—
Red Hat	Red Hat Enterprise Linux 9	—

References

https://access.redhat.com/security/cve/CVE-2026-66757Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2507465Issue Tracking, Vendor Advisory
https://gitlab.gnome.org/GNOME/gimp/-/work_items/16494Exploit, Issue Tracking, Vendor Advisory
https://gitlab.gnome.org/GNOME/gimp/-/work_items/16494Exploit, Issue Tracking, Vendor Advisory

Timeline

Published: Jul 27, 2026
Last modified: Nov 5, 2026
NVD status: Analyzed

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