ImageMagick is free and open-source software used for editing and manipulating digital images. `WriteUHDRImage` in `coders/uhdr.c` uses `int` arithmetic to compute the pixel buffer size. Prior to version 7.1.2-15, when image dimensions are large, the multiplication overflows 32-bit `int`, causing an undersized heap allocation followed by an out-of-bounds write. This can crash the process or potentially lead to an out of bounds heap write. Version 7.1.2-15 contains a patch.

An update of the ImageMagick package has been released.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20337-1 advisory.

    - CVE-2026-22770: improper pointer initialization can cause denial of service (bsc#1256969).
    - CVE-2026-23874: manipulation of digital images can lead to stack overflow (bsc#1256976).
    - CVE-2026-23876: ImageMagick: maliciously crafted image can lead to heap buffer overflow (bsc#1256962).
    - CVE-2026-23952: processing comment tag can cause null pointer dereference (bsc#1257076).
    - CVE-2026-24481: Possible Heap Information Disclosure in PSD ZIP Decompression (bsc#1258743).
    - CVE-2026-24484: denial of service vulnerability via multi-layer nested MVG to SVG conversion     (bsc#1258790).
    - CVE-2026-24485: denial of service via malformed PCD file processing (bsc#1258791).
    - CVE-2026-25576: Out of bounds read in multiple coders that read raw pixel data (bsc#1258748).
    - CVE-2026-25637: Denial of Service via crafted image due to memory leak (bsc#1258759).
    - CVE-2026-25638: Denial of Service due to memory leak in image processing (bsc#1258793).
    - CVE-2026-25794: Heap-buffer-overflow via signed integer overflow in `WriteUHDRImage` when writing UHDR     images with       large dimensions (bsc#1258749).
    - CVE-2026-25795: Denial of Service due to NULL pointer dereference during temporary file creation failure       (bsc#1258792).
    - CVE-2026-25796: Memory leak of watermark Image object in ReadSTEGANOImage on multiple error/early-return     paths       (bsc#1258757).
    - CVE-2026-25797: Code injection in various encoders (bsc#1258770).
    - CVE-2026-25798: NULL Pointer Dereference in ClonePixelCacheRepository via crafted image (bsc#1258787).
    - CVE-2026-25799: Division-by-Zero in YUV sampling factor validation leads to crash (bsc#1258786).
    - CVE-2026-25897: Out-of-bounds heap write via integer overflow in sun decoder (bsc#1258799).
    - CVE-2026-25898: Information disclosure or denial of service via crafted image with invalid pixel index     (bsc#1258807).
    - CVE-2026-25965: Policy bypass through path traversal allows reading restricted content despite secured     policy       (bsc#1258785).
    - CVE-2026-25966: Security Policy Bypass through config/policy-secure.xml via fd handler leads to     stdin/stdout access       (bsc#1258780).
    - CVE-2026-25967: Stack buffer overflow in FTXT reader via oversized integer field (bsc#1258779).
    - CVE-2026-25968: MSL attribute stack buffer overflow leads to out of bounds write (bsc#1258776).
    - CVE-2026-25969: Memory Leak in coders/ashlar.c (bsc#1258775).
    - CVE-2026-25970: Memory corruption and denial of service via signed integer overflow in SIXEL decoder     (bsc#1258802).
    - CVE-2026-25971: MSL: Stack overflow in ProcessMSLScript (bsc#1258774).
    - CVE-2026-25982: Heap Out-of-Bounds Read in DCM Decoder (bsc#1258772).
    - CVE-2026-25983: Denial of service via crafted MSL script (bsc#1258805).
    - CVE-2026-25985: Memory allocation with excessive without limits in the internal SVG decoder     (bsc#1258812).
    - CVE-2026-25986: Denial of Service via malicious YUV image processing (bsc#1258818).
    - CVE-2026-25987: Memory disclosure and denial of service via crafted MAP files (bsc#1258821).
    - CVE-2026-25988: Denial of Service due to memory leak in image processing (bsc#1258810).
    - CVE-2026-25989: Integer overflow or wraparound and incorrect conversion between numeric types in the     internal SVG       decoder (bsc#1258771).
    - CVE-2026-26066: Infinite loop when writing IPTCTEXT leads to denial of service via crafted profile     (bsc#1258769).
    - CVE-2026-26283: Possible infinite loop in JPEG encoder when using `jpeg: extent` (bsc#1258767).
    - CVE-2026-26284: Heap overflow in pcd decoder leads to out of bounds read (bsc#1258765).
    - CVE-2026-26983: Invalid MSL <map> can result in a use after free (bsc#1258763).
    - CVE-2026-27798: Heap Buffer Over-read in WaveletDenoise when processing small images (bsc#1259018).
    - CVE-2026-27799: ImageMagick has a heap Buffer Over-read in its DJVU image format handler (bsc#1259017).

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 remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6158 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6158-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     March 09, 2026                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : imagemagick     CVE ID         : CVE-2026-24481 CVE-2026-24484 CVE-2026-24485 CVE-2026-25576                      CVE-2026-25637 CVE-2026-25638 CVE-2026-25794 CVE-2026-25795                      CVE-2026-25796 CVE-2026-25797 CVE-2026-25798 CVE-2026-25799                      CVE-2026-25897 CVE-2026-25898 CVE-2026-25965 CVE-2026-25966                      CVE-2026-25967 CVE-2026-25968 CVE-2026-25969 CVE-2026-25970                      CVE-2026-25971 CVE-2026-25982 CVE-2026-25983 CVE-2026-25985                      CVE-2026-25986 CVE-2026-25987 CVE-2026-25988 CVE-2026-25989                      CVE-2026-26066 CVE-2026-26283 CVE-2026-26284 CVE-2026-26983                      CVE-2026-27798 CVE-2026-27799

    Multiple security vulnerabilities were discovered in imagemagick, a     software suite used for editing and manipulating digital images, which     could lead to information leaks, bypass of security policies, denial of     service or arbitrary code execution.

    For the stable distribution (trixie), these problems have been fixed in     version 8:7.1.1.43+dfsg1-1+deb13u6.

    We recommend that you upgrade your imagemagick packages.

    For the detailed security status of imagemagick please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/imagemagick

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian 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 host has a version of ImageMagick installed that is prior to 6.9.13-40 or 7.1.2-15. It is, therefore, affected by multiple vulnerabilities as referenced in multiple GitHub Security Advisories.

  - A heap-based buffer overflow vulnerability exists in the SUN image decoder. When processing a     specially crafted SUN image file, a signed integer overflow can occur in the ReadSUNImage function     during the calculation of the memory size for sun_pixels. On 32-bit systems and builds, the addition     of pixels_length and image->rows can wrap around, leading to the allocation of a buffer significantly     smaller than required. Subsequent decoding operations then write pixel data past the end of this     allocated buffer, resulting in a heap-based buffer overflow. This can be exploited to cause a crash     (DoS) or potentially lead to memory corruption. (CVE-2026-25897)

  - A path traversal vulnerability exists in ImageMagick's core security policy engine. The security     engine evaluates the raw filename string (the input provided by the user) before the operating system     resolves the final path. Consequently, a policy intended to block access to /etc/* can be bypassed     using standard path traversal techniques (e.g., images/../../etc/passwd). The policy matcher only sees     the unnormalized path and allows it, but the OS resolves the dots and opens the sensitive file. This     effectively nullifies security configurations like policy-secure.xml. (CVE-2026-25965)

  - A heap-based buffer overflow vulnerability exists in the WriteUHDRImage function which uses 32-bit     int arithmetic to calculate the size of the required pixel buffer. When processing images with     extremely large dimensions, the multiplication operation overflows. This results in an undersized heap     allocation. Subsequent writing of image data into this too-small buffer leads to an out-of-bounds     write. While primarily a crash risk (DoS), memory corruption of this type can, in specific     environments, be leveraged for remote code execution. (CVE-2026-25794)

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.

  - ImageMagick is free and open-source software used for editing and manipulating digital images.
    `WriteUHDRImage` in `coders/uhdr.c` uses `int` arithmetic to compute the pixel buffer size. Prior to     version 7.1.2-15, when image dimensions are large, the multiplication overflows 32-bit `int`, causing an     undersized heap allocation followed by an out-of-bounds write. This can crash the process or potentially     lead to an out of bounds heap write. Version 7.1.2-15 contains a patch. (CVE-2026-25794)

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

ID	Name	Product	Family	Severity
303021	Photon OS 5.0: Imagemagick PHSA-2026-5.0-0790	Nessus	PhotonOS Local Security Checks	critical
302117	Photon OS 4.0: Imagemagick PHSA-2026-4.0-0976	Nessus	PhotonOS Local Security Checks	critical
301813	openSUSE 16 Security Update : ImageMagick (openSUSE-SU-2026:20337-1)	Nessus	SuSE Local Security Checks	critical
301556	Debian dsa-6158 : imagemagick - security update	Nessus	Debian Local Security Checks	critical
300075	ImageMagick < 6.9.13-40 / 7.x < 7.1.2-15 Multiple Vulnerabilities	Nessus	Misc.	critical
299854	Linux Distros Unpatched Vulnerability : CVE-2026-25794	Nessus	Misc.	high

Detections

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CVE-2026-25794

high

Tenable Plugins

critical

critical

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high