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.

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1618:09 advisory.

    * gimp: GIMP APNG loader heap-buffer-overflow when fcTL width exceeds IHDR width (file-png.c)     (CVE-2026-42169)
      * gimp: integer overflow in file-fits plugin causes a heap-based buffer overflow on crafted FITS images     (CVE-2026-66758)
      * gimp: out-of-bounds read in file-icns plugin causes information disclosure or crash on crafted ICNS     images (CVE-2026-66759)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of gimp installed on the remote host is prior to 2.8.22-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2GIMP-2026-017 advisory.

    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.
    (CVE-2026-40915)

    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. (CVE-2026-66758)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-50817 advisory.

    - fix CVE-2026-42169
    - fix CVE-2026-66758

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:50817 advisory.

    The GIMP (GNU Image Manipulation Program) is an image composition and editing program. GIMP provides a     large image manipulation toolbox, including channel operations and layers, effects, sub-pixel imaging and     anti-aliasing, and conversions, all with multi-level undo.

    Security Fix(es):

    * gimp: GIMP APNG loader heap-buffer-overflow when fcTL width exceeds IHDR width (file-png.c)     (CVE-2026-42169)

    * gimp: integer overflow in file-fits plugin causes a heap-based buffer overflow on crafted FITS images     (CVE-2026-66758)

    * gimp: out-of-bounds read in file-icns plugin causes information disclosure or crash on crafted ICNS     images (CVE-2026-66759)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21521-1 advisory.

    Changes in gimp:

    - CVE-2026-66757: signed integer overflow in `file-sgi` causes the plugin to crash when RLE-compressed SGI     images are processed (bsc#1273151)
    - CVE-2026-66758: integer overflow in `file-fits` plugin causes a heap-based buffer overflow when crafted     FITS images are processed (bsc#1273152)
    - CVE-2026-66759: out-of-bounds read in `file-icns` plugin causes information disclosure or crash when     crafted ICNS images are processed (bsc#1273153)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-66758)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
339028	MiracleLinux 9 : gimp-3.0.4-4.el9_8.9 (AXSA:2026-1618:09)	Nessus	Miracle Linux Local Security Checks	Local	high
337238	Amazon Linux 2 : gimp, --advisory ALAS2GIMP-2026-017 (ALASGIMP-2026-017)	Nessus	Amazon Linux Local Security Checks	Local	high
332980	Oracle Linux 9 : gimp (ELSA-2026-50817)	Nessus	Oracle Linux Local Security Checks	Local	high
332755	RHEL 9 : gimp (RHSA-2026:50817)	Nessus	Red Hat Local Security Checks	Local	high
332104	openSUSE 16: gimp / gimp-devel / gimp-extension-goat-excercises / gimp-lang / etc (openSUSE-SU-2026:21521-1)	Nessus	SuSE Local Security Checks	Local	high
330229	Linux Distros Unpatched Vulnerability : CVE-2026-66758	Nessus	Misc.	Local	high

Detections

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CVE-2026-66758

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Tenable Plugins

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high

high

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high

high