CVE-2025-15536

MediumCVSS 5.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-119 CWE-122 CWE-787

Affected software

Vendor	Product	Versions
BYVoid	OpenCC	1.1.0; 1.1.1; 1.1.2; 1.1.3; 1.1.4; 1.1.5; 1.1.6; 1.1.7; 1.1.8; 1.1.9

References

https://github.com/BYVoid/OpenCC/
https://github.com/BYVoid/OpenCC/commit/345c9a50ab07018f1b4439776bad78a0d40778ecPatch
https://github.com/BYVoid/OpenCC/issues/997Exploit, Issue Tracking, Patch
https://github.com/BYVoid/OpenCC/pull/1005Issue Tracking, Patch
https://github.com/oneafter/1222/blob/main/reproProduct
https://vuldb.com/?ctiid.341708Permissions Required, VDB Entry
https://vuldb.com/?id.341708Third Party Advisory, VDB Entry
https://vuldb.com/?submit.733347Exploit, Third Party Advisory, VDB Entry
https://github.com/BYVoid/OpenCC/issues/997Exploit, Issue Tracking, Patch

Timeline

Published: Jan 18, 2026
Last modified: Jun 17, 2026
NVD status: Modified

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