CVE-2026-112257CWE-121

CVE-2026-112257

High · published October 20, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
2.8
In the wild
Unconfirmed
What it is

A flaw was found in GIMP. The PSD thumbnail resource loader performs a BGR-to-RGB channel swap with a fixed 3-byte stride and does not verify that the JPEG thumbnail is RGB. A crafted grayscale PSD thumbnail can cause a heap out-of-bounds read and write in the plug-in process, leading to a crash and potentially arbitrary code execution when the victim browses or opens the file.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00136 · 2.8th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-10-20T02:17Z
References (2)
https://access.redhat.com/security/cve/CVE-2026-112257 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2555574 · [email protected]
EPSS history
Timeline
  • 21 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 19 OCT 21:37Z
    Gimp: gimp: heap out-of-bounds read/write in psd thumbnail loader (load_resource_1033)
    cvelistv5
  • 19 OCT 21:37Z
    Gimp: gimp: heap out-of-bounds read/write in psd thumbnail loader (load_resource_1033)
    cvelistv5