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CVE-2025-15536

5.3 · MEDIUM
Published Jan 18, 2026 byvoid CWE-119

Overview

CVE-2025-15536 is a medium-severity vulnerability affecting byvoid open_chinese_convert. It was published on January 18, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical Description

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.

Remediation

Check the references section for vendor advisories and patches from byvoid. Update open_chinese_convert to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor Product Versions Status
byvoid open_chinese_convert 0 Affected

References

GitHub github.com/BYVoid/OpenCC/ GitHub github.com/BYVoid/OpenCC/commit/345c9a50ab07018f1b4439776bad78a0d40778ec GitHub github.com/BYVoid/OpenCC/issues/997 GitHub github.com/BYVoid/OpenCC/pull/1005 GitHub github.com/oneafter/1222/blob/main/repro Ref vuldb.com/?ctiid.341708 Ref vuldb.com/?id.341708 Ref vuldb.com/?submit.733347 GitHub github.com/BYVoid/OpenCC/issues/997

Frequently Asked Questions

What is CVE-2025-15536?

CVE-2025-15536 is a medium-severity vulnerability affecting byvoid open_chinese_convert. It was published on January 18, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-15536?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-15536?

Check the references section for vendor advisories and patches from byvoid. Update open_chinese_convert to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-15536?

CyberStrike's AI-powered security agents can automatically detect CVE-2025-15536 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

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