A vulnerability, which was classified as critical, has been found in tbeu matio 1.5.28. This issue affects the function Mat_VarPrint of the file src/mat.c. The manipulation leads to heap-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4459 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4459-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                   Andreas Henriksson     January 29, 2026                              https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : libmatio     Version        : 1.5.19-2+deb11u1     CVE ID         : CVE-2022-1515 CVE-2025-2338 CVE-2025-50343     Debian Bug     : 1104247 1124797


    Multiple vulnerabilities has been discovered in libmatio, a MAT File I/O     Library.

    CVE-2025-50343       A Denial of Service (DoS) and in certain cases heap corruption vulnerability       was found, which could lead to potential remote code execution if libmatio is       embedded in services that accepts user-supplied .mat files.

    CVE-2025-2338       A Denial of Service (DoS) and head-based buffer overflow was found, which       could potentially lead to remote code execution if libmatio is embedded in       services that accepts user-supplied .mat files.

    CVE-2022-1515       A memory leak was discovered in matio 1.5.21 and earlier. This could lead       to a potential Denial of Service (DoS).

    CVE-2020-36428      A heap-based buffer overflow was found which could lead to potential remote      code execution if libmatio is embedded in services that accepts user-supplied      .mat files.

    Additionally CVE-2025-2337 and CVE-2020-36428 was investigated and deemed     not to apply (directly) to this libmatio version.

    For Debian 11 bullseye, these problems have been fixed in version     1.5.19-2+deb11u1.

    We recommend that you upgrade your libmatio packages.

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

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

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 openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20022-1 advisory.

    - update to version 1.5.29:
      * Fix printing rank-1-variable in Mat_VarPrint
      * Fix array index out of bounds in Mat_VarPrint when printing         UTF-8 character data (boo#1239678, CVE-2025-2337)
      * Fix heap-based buffer overflow in strdup_vprintf         (boo#1239677, CVE-2025-2338)
      * Changed Mat_VarPrint to print all values of rank-2-variable
      * Several other fixes, for example for access violations in         Mat_VarPrint

    - Update to version 1.5.28:
      * Fixed bug writing MAT_T_INT8/MAT_T_UINT8 encoded character         array to compressed v5 MAT file (regression of v1.5.12).
      * Fixed bug reading all-zero sparse array of v4 MAT file         (regression of v1.5.18).
      * Updated C99 snprintf.c.
      * CMake: Enabled testing.
      * Several other fixes, for example for access violations in         Mat_VarPrint.

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 vulnerability, which was classified as critical, has been found in tbeu matio 1.5.28. This issue affects     the function Mat_VarPrint of the file src/mat.c. The manipulation leads to heap-based buffer overflow. The     attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
    (CVE-2025-2337)

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

ID	Name	Product	Family	Severity
297142	Debian dla-4459 : libmatio-dev - security update	Nessus	Debian Local Security Checks	medium
284818	openSUSE 16 Security Update : matio (openSUSE-SU-2026:20022-1)	Nessus	SuSE Local Security Checks	medium
243880	Linux Distros Unpatched Vulnerability : CVE-2025-2337	Nessus	Misc.	medium

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