What’s Vulnerable › Vulnerabilities

CVE-2026-66757: Gimp: signed integer overflow in file-sgi (sgi-lib) causes the plugin to crash on rle sgi images

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-07-27 · updated 2026-08-10
• Weakness: CWE-190

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.

Affected products

• GIMP: 3.2.6
• Red Hat Enterprise Linux: 7.0, 8.0, 9.0

References

• https://access.redhat.com/security/cve/CVE-2026-66757
• https://bugzilla.redhat.com/show_bug.cgi?id=2507465
• https://gitlab.gnome.org/GNOME/gimp/-/work_items/16494
• https://gitlab.gnome.org/GNOME/gimp/-/work_items/16494

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