{"cve":"CVE-2025-15536","nvd":{"published":"2026-01-18T09:15:46.960","modified":"2026-06-17T08:37:58.633","status":"Modified","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.","cvss_v4":{"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","score":1.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-787","CWE-119","CWE-122"],"references":["https://github.com/BYVoid/OpenCC/","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"],"products":["byvoid:open_chinese_convert"],"source":"nvd","synced_at":"2026-10-19T22:21:16.563232421+00:00"},"epss":{"cve":"CVE-2025-15536","score":0.00252,"percentile":0.16751,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5pr6-crvp-2j9f","url":"https://osv.dev/vulnerability/GHSA-5pr6-crvp-2j9f","summary":"Open Chinese Convert has Out-of-bounds Write","modified":"2026-02-22T23:26:19.355843Z","packages":[{"ecosystem":"npm","name":"opencc","purl":"pkg:npm/opencc","ranges":["<1.2.0"],"fixed":["1.2.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}