{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-15536","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","state":"PUBLISHED","assignerShortName":"VulDB","dateReserved":"2026-01-17T16:27:11.665Z","datePublished":"2026-01-18T09:02:12.026Z","dateUpdated":"2026-02-23T08:37:24.565Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB","dateUpdated":"2026-02-23T08:37:24.565Z"},"title":"BYVoid OpenCC MaxMatchSegmentation.cpp MaxMatchSegmentation heap-based overflow","problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-122","lang":"en","description":"Heap-based Buffer Overflow"}]},{"descriptions":[{"type":"CWE","cweId":"CWE-119","lang":"en","description":"Memory Corruption"}]}],"affected":[{"vendor":"BYVoid","product":"OpenCC","versions":[{"version":"1.1.0","status":"affected"},{"version":"1.1.1","status":"affected"},{"version":"1.1.2","status":"affected"},{"version":"1.1.3","status":"affected"},{"version":"1.1.4","status":"affected"},{"version":"1.1.5","status":"affected"},{"version":"1.1.6","status":"affected"},{"version":"1.1.7","status":"affected"},{"version":"1.1.8","status":"affected"},{"version":"1.1.9","status":"affected"}]}],"descriptions":[{"lang":"en","value":"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":[{"cvssV4_0":{"version":"4.0","baseScore":4.8,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":5.3,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":5.3,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":4.3,"vectorString":"AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C"}}],"timeline":[{"time":"2026-01-17T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-01-17T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-02-07T00:23:11.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Oneafter (VulDB User)","type":"reporter"}],"references":[{"url":"https://vuldb.com/?id.341708","name":"VDB-341708 | BYVoid OpenCC MaxMatchSegmentation.cpp MaxMatchSegmentation heap-based overflow","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.341708","name":"VDB-341708 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.733347","name":"Submit #733347 | BYVoid OpenCC ver.1.1.9 and master-branch Heap-based Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/BYVoid/OpenCC/issues/997","tags":["issue-tracking"]},{"url":"https://github.com/BYVoid/OpenCC/pull/1005","tags":["issue-tracking"]},{"url":"https://github.com/oneafter/1222/blob/main/repro","tags":["exploit"]},{"url":"https://github.com/BYVoid/OpenCC/commit/345c9a50ab07018f1b4439776bad78a0d40778ec","tags":["patch"]},{"url":"https://github.com/BYVoid/OpenCC/","tags":["product"]}],"tags":["x_open-source"]},"adp":[{"references":[{"url":"https://github.com/BYVoid/OpenCC/issues/997","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-20T17:06:49.316017Z","id":"CVE-2025-15536","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-01-20T17:07:00.359Z"}}]}}