{"schema":"threatline.record/2","record":{"id":"CVE-2026-65200","aliases":[],"summary":"Huawei malicious on-bus PLDM or NCSI device can drive out-of-bounds-heap reads via short MCTP responses","details":"The openUBMC device-management process parses PLDM-over-MCTP and NCSI-over-MCTP responses from on-bus devices, and three response parsers in the shared transport libraries subtract a fixed header or reserved-field size from a device-supplied response length without a lower-bound check. An undersized response wraps the unsigned length difference to a very large value, and the parser then reads far past the response buffer. The affected code sits in the base (non-vendor) PLDM control class and the Huawei NCSI driver, so it is reachable for any PLDM endpoint or Huawei NIC on the internal management bus, unlike the vendor-specific wangxun parser tracked separately.","categories":["Network & edge"],"product":"openBMC","vendor":"Huawei","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-65200","source_modified_at":"2026-10-14T18:58:04.702Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"openBMC","vendor":"Huawei","versions":[{"status":"affected","version":"0","lessThanOrEqual":"26.06","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":3.5,"severity":"Low","kev":{"listed":false},"epss":{"probability":0.00143,"percentile":0.03262,"score_date":"2026-10-23"},"published_at":"2026-10-13T14:19:51.462Z","modified_at":"2026-10-14T18:58:04.702Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-65200","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T18:58:04.702Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-65200","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://www.runzero.com/advisories/huawei-malicious-device-integer-underflow-cve-2026-65200","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-14T18:57:49.030835Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-14T18:58:04.702Z","content_hash":"a2efc92c9ba35fa470002cb26e1e0b4c20ff0b7480dcb9dced1e014889d4c360"}}