A weakness has been identified in BYVoid OpenCC up to 1.1.9. This vulnerability affects the function opencc::MaxMatchSegmentation of the file src/MaxMatchSegmentation.cpp. This manipulation causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. Patch name: 345c9a50ab07018f1b4439776bad78a0d40778ec. To fix this issue, it is recommended to deploy a patch.

The remote openSUSE 16 host has packages installed that are affected by a vulnerability as referenced in the openSUSE- SU-2026:20683-1 advisory.

    Update to version 1.2.0.

    Security issues fixed:

    - CVE-2025-15536: specifically crafted string can lead to out-of-bounds read (bsc#1256930).

    Other updates and bugfixes:

    - Version 1.2.0:
      * Fix the crash issue when reading configuration files.
      * Add type definitions (Typing).
      * Fix two out-of-bounds reading issues when handling truncated UTF-8 input.

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

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

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - A weakness has been identified in BYVoid OpenCC up to 1.1.9. This vulnerability affects the function
    opencc::MaxMatchSegmentation of the file src/MaxMatchSegmentation.cpp. This manipulation causes heap-based
    buffer overflow. The attack is restricted to local execution. The exploit has been made available to the
    public and could be used for attacks. Patch name: 345c9a50ab07018f1b4439776bad78a0d40778ec. To fix this
    issue, it is recommended to deploy a patch. (CVE-2025-15536)

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-b627cd8944 advisory.

    - Fix CVE-2025-15536

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

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

The remote Fedora 42 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-5829e53bd7 advisory.

    - Fix CVE-2025-15536

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

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

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by a vulnerability as referenced in the USN-7972-1 advisory.

    It was discovered that OpenCC incorrectly handled truncated UTF-8 input. An attacker could possibly use     this issue to cause OpenCC to crash, resulting in a denial of service.

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

Note that Nessus has not tested for this issue 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 weakness has been identified in BYVoid OpenCC up to 1.1.9. This vulnerability affects the function     opencc::MaxMatchSegmentation of the file src/MaxMatchSegmentation.cpp. This manipulation causes heap-based     buffer overflow. The attack is restricted to local execution. The exploit has been made available to the     public and could be used for attacks. Patch name: 345c9a50ab07018f1b4439776bad78a0d40778ec. To fix this     issue, it is recommended to deploy a patch. (CVE-2025-15536)

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

ID	Name	Product	Family	Severity
313698	openSUSE 16 Security Update : opencc (openSUSE-SU-2026:20683-1)	Nessus	SuSE Local Security Checks	medium
437633	SCA: security update for opencc (GHSA-5pr6-crvp-2j9f)	Tenable Cloud Security	SCA Checks	medium
437633	SCA: security update for opencc (GHSA-5pr6-crvp-2j9f)	Tenable Self-Hosted Container Security	SCA Checks	medium
297498	Fedora 43 : opencc (2026-b627cd8944)	Nessus	Fedora Local Security Checks	medium
297495	Fedora 42 : opencc (2026-5829e53bd7)	Nessus	Fedora Local Security Checks	medium
296248	Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : OpenCC vulnerability (USN-7972-1)	Nessus	Ubuntu Local Security Checks	medium
291616	Linux Distros Unpatched Vulnerability : CVE-2025-15536	Nessus	Misc.	medium

Detections

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CVE-2025-15536

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Tenable Plugins

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medium