CVE-2026-66758

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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:50817	Issue Tracking
https://access.redhat.com/errata/RHSA-2026:62507
https://access.redhat.com/security/cve/CVE-2026-66758	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2507475	Issue Tracking Vendor Advisory
https://gitlab.gnome.org/GNOME/gimp/-/issues/16528	Exploit Issue Tracking Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:gimp:gimp:3.0.8:::::::*
	cpe:2.3:a:gimp:gimp:3.2.4:::::::*
	cpe:2.3:o:redhat:enterprise_linux:6.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*

History

No history.

Information

Published : 2026-07-27 19:17

Updated : 2026-09-02 10:17

NVD link : CVE-2026-66758

Mitre link : CVE-2026-66758

CVE.ORG link : CVE-2026-66758

JSON object : View

Products Affected

redhat

enterprise_linux

gimp

gimp

CWE

CWE-190

Integer Overflow or Wraparound

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