CVE-2026-66758

highpriority · track · 0EPSS 0.003 · 22 %ileDEEUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.30% (22nd) EPSS
CVSS 7.8 · high
Is it mine?
19 products
Check your exposure
Who says so?
3 sources
enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

A flaw was found in the file-fits plugin in GIMP. When processing a FITS image file, the plugin calculates memory allocation sizes using signed 32-bit integers for width and height. If a crafted file sets both values to large values, their product exceeds 2^31 and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when cfitsio subsequently writes a full row of pixels in the buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service.

01

cvss

Technical severity, 0–10. One row per scoring source.

7.8
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · ENISA EU
v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · secalert@redhat.com USexploitability 1.8 · impact 5.9
v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

04

affected products (19)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-2539GIMP Plugins: Mehrere SchwachstellenDeutsch2026-07-27csaf · cert_bundDE

    Ein lokaler Angreifer kann mehrere Schwachstellen in GIMP ausnutzen, um einen Denial of Service Angriff durchzuführen, beliebigen Code auszuführen oder vertrauliche Informationen offenzulegen.

06

also known as (2)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

published 2026-07-27modified 2026-09-02
08

references (9)

External citations — patches, advisories, analysis.

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