{"id":"CVE-2026-65200","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-65200","generatedAt":"2026-10-28T03:58:17.744Z","title":"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…","description":"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.","published":"2026-10-13T15:17:47.000Z","lastModified":"2026-10-16T19:56:16.000Z","status":"Deferred","sourceIdentifier":"44488dab-36db-4358-99f9-bc116477f914","cvss":{"version":"3.1","score":3.5,"severity":"LOW","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L"},"cwe":["CWE-191"],"affected":[],"epss":{"score":0.00143,"percentile":0.03557,"date":"2026-10-27","history":[{"date":"2026-10-14","score":0.00143,"percentile":0.0317}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.14%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-13T15:17:47.000Z","detail":{"score":"3.5","severity":"LOW","publishedAt":"2026-10-13T15:17:47.077Z"},"summary":"New CVE, low severity (CVSS 3.5)."}],"references":[{"url":"https://www.runzero.com/advisories/huawei-malicious-device-integer-underflow-cve-2026-65200","source":"44488dab-36db-4358-99f9-bc116477f914"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-65200","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}