A flaw was found in the file-icns plugin in GIMP. When applying a decompressed mask during ICNS image processing, the plugin reads from the mask data buffer without verifying if the cursor exceeds the allocated resource size. If a crafted file contains a truncated mask resource, the icns_decompress function continues reading past the bounds of the buffer. This out-of-bounds read vulnerability results in information disclosure of heap contents, where memory contents are leaked as alpha channel pixel values, or a crash leading to a denial of service if unmapped memory is accessed.

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-icns plugin in GIMP. When applying a decompressed mask during ICNS image     processing, the plugin reads from the mask data buffer without verifying if the cursor exceeds the     allocated resource size. If a crafted file contains a truncated mask resource, the icns_decompress     function continues reading past the bounds of the buffer. This out-of-bounds read vulnerability results in     information disclosure of heap contents, where memory contents are leaked as alpha channel pixel values,     or a crash leading to a denial of service if unmapped memory is accessed. (CVE-2026-66759)

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

ID	Name	Product	Family	Type	Severity
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
330223	Linux Distros Unpatched Vulnerability : CVE-2026-66759	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-66759

high

Tenable Plugins

high

high

high

high