CVE-2026-40915: Gimp: gimp: heap buffer overflow due to integer overflow in fits image loader

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-15 · updated 2026-10-26
Weakness: CWE-190

Description

A flaw was found in GIMP. A remote attacker could exploit an integer overflow vulnerability in the FITS image loader by providing a specially crafted FITS file. This integer overflow leads to a zero-byte memory allocation, which is then subjected to a heap buffer overflow when processing pixel data. Successful exploitation could result in a denial of service (DoS) or potentially arbitrary code execution.

Affected products

GIMP: all versions
Red Hat Enterprise Linux: 6.0, 7.0, 8.0, 9.0

References

https://access.redhat.com/security/cve/CVE-2026-40915
https://bugzilla.redhat.com/show_bug.cgi?id=2458744

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