CVE-2025-15536

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.

CVSS v3 5.3 MEDIUM
CVSS v2.0 4.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 3.1 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

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

Configurations

No configuration.

History

20 Jan 2026, 18:16

Type	Values Removed	Values Added
References	~~() https://github.com/BYVoid/OpenCC/issues/997 -~~	() https://github.com/BYVoid/OpenCC/issues/997 -

18 Jan 2026, 09:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-18 09:15

Updated : 2026-01-26 15:05

NVD link : CVE-2025-15536

Mitre link : CVE-2025-15536

CVE.ORG link : CVE-2025-15536

JSON object : View

Products Affected

No product.

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-122

Heap-based Buffer Overflow

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