CVE-2026-66757

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2026-07-27 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Low Complexity No Auth

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Required
S: Unchanged
C: None
I: None
A: High

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 Software (4)

Bug Bounty Relevance

36 / 100
✓ No authentication
✓ Low complexity

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.23%
Raw Score 0.002330
Percentile 14.3%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00233
2026-11-12
0.00233
2026-11-10
0.00233
2026-11-09
0.00233
2026-11-08
0.00233
2026-11-07
0.00233
2026-11-06
0.00232
2026-11-05
0.00232

Intelligence Sources

mitre ref →
nvd ref →