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TI-2025-14175 Aliases CVE-2025-15536GHSA-5pr6-crvp-2j9f

BYVoid OpenCC MaxMatchSegmentation.cpp MaxMatchSegmentation heap-based overflow

Priority MEDIUM 55CWE-119Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00252 16th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix Partial opencc (npm): 1.2.0Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
BYVoidOpenCC1.1.0; 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—No fix listedCNA
—opencc (npm)before 1.2.01.2.0Patch availableGHSA-5pr6-crvp-2j9f
  • OpenCC VendorBYVoid 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 Fixed in — No fix listed CNA
  • opencc (npm) Vendor— Affected before 1.2.0 Fixed in 1.2.0 Patch available GHSA-5pr6-crvp-2j9f

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:byvoid:open_chinese_convert:*:*:*:*:*:*:*:*up to 1.1.9VulnerableBYVoid
  • cpe:2.3:a:byvoid:open_chinese_convert:*:*:*:*:*:*:*:* Versions up to 1.1.9 Vulnerable ·BYVoid

Remediation

  • Fix · GHSA-5pr6-crvp-2j9f opencc (npm) Fixed in 1.2.0 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-15536
  2. 2026-10-03 Alias added: GHSA-5pr6-crvp-2j9f

References

Exploit 2

Patch 2

Advisory 1

Other 2

  • TI-2018-12133 Open Chinese Convert (OpenCC) 1.0.5 allows attackers to cause a denial of service… CVSS 3.0MEDIUM 5.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences