CVE-2026-66758
highpriority · track · 0EPSS 0.003 · 22 %ileDEEUUSEPSS · 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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (19)
Products and version ranges known to be affected.
- Open Source Open Source GIMP file-icns plugin <commit 41ef3318≤ file-icns plugin <commit 41ef3318cert_bundDE
- Open Source Open Source GIMP file-icns plugin <commit abb3129a≤ file-icns plugin <commit abb3129acert_bundDE
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.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- https://access.redhat.com/errata/RHSA-2026:50817enisa_euvd
- https://access.redhat.com/security/cve/CVE-2026-66758enisa_euvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2507475enisa_euvd
- https://gitlab.gnome.org/GNOME/gimp/-/issues/16528enisa_euvd
- https://access.redhat.com/errata/RHSA-2026:50817Issue Trackingnvd
- https://access.redhat.com/errata/RHSA-2026:62507nvd
- https://access.redhat.com/security/cve/CVE-2026-66758Vendor Advisorynvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2507475Issue TrackingVendor Advisorynvd
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