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CVE Vulnerability Details :
CVE-2025-15536
PUBLISHED
More InfoOfficial Page
Assigner-VulDB
Assigner Org ID-1af790b2-7ee1-4545-860a-a788eba489b5
View Known Exploited Vulnerability (KEV) details
Published At-18 Jan, 2026 | 09:02
Updated At-23 Feb, 2026 | 08:37
Rejected At-
▼CVE Numbering Authority (CNA)
BYVoid OpenCC MaxMatchSegmentation.cpp MaxMatchSegmentation heap-based overflow

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.

Affected Products
Vendor
BYVoid
Product
OpenCC
Versions
Affected
  • 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
Problem Types
TypeCWE IDDescription
CWECWE-122Heap-based Buffer Overflow
CWECWE-119Memory Corruption
Type: CWE
CWE ID: CWE-122
Description: Heap-based Buffer Overflow
Type: CWE
CWE ID: CWE-119
Description: Memory Corruption
Metrics
VersionBase scoreBase severityVector
4.04.8MEDIUM
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
3.15.3MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
3.05.3MEDIUM
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
2.04.3N/A
AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C
Version: 4.0
Base score: 4.8
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Version: 3.0
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Version: 2.0
Base score: 4.3
Base severity: N/A
Vector:
AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
Oneafter (VulDB User)
Timeline
EventDate
Advisory disclosed2026-01-17 00:00:00
VulDB entry created2026-01-17 01:00:00
VulDB entry last update2026-02-07 00:23:11
Event: Advisory disclosed
Date: 2026-01-17 00:00:00
Event: VulDB entry created
Date: 2026-01-17 01:00:00
Event: VulDB entry last update
Date: 2026-02-07 00:23:11
Replaced By
Rejected Reason
References
HyperlinkResource
https://vuldb.com/?id.341708
vdb-entry
technical-description
https://vuldb.com/?ctiid.341708
signature
permissions-required
https://vuldb.com/?submit.733347
third-party-advisory
https://github.com/BYVoid/OpenCC/issues/997
issue-tracking
https://github.com/BYVoid/OpenCC/pull/1005
issue-tracking
https://github.com/oneafter/1222/blob/main/repro
exploit
https://github.com/BYVoid/OpenCC/commit/345c9a50ab07018f1b4439776bad78a0d40778ec
patch
https://github.com/BYVoid/OpenCC/
product
Hyperlink: https://vuldb.com/?id.341708
Resource:
vdb-entry
technical-description
Hyperlink: https://vuldb.com/?ctiid.341708
Resource:
signature
permissions-required
Hyperlink: https://vuldb.com/?submit.733347
Resource:
third-party-advisory
Hyperlink: https://github.com/BYVoid/OpenCC/issues/997
Resource:
issue-tracking
Hyperlink: https://github.com/BYVoid/OpenCC/pull/1005
Resource:
issue-tracking
Hyperlink: https://github.com/oneafter/1222/blob/main/repro
Resource:
exploit
Hyperlink: https://github.com/BYVoid/OpenCC/commit/345c9a50ab07018f1b4439776bad78a0d40778ec
Resource:
patch
Hyperlink: https://github.com/BYVoid/OpenCC/
Resource:
product
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/BYVoid/OpenCC/issues/997
exploit
Hyperlink: https://github.com/BYVoid/OpenCC/issues/997
Resource:
exploit
Details not found