{"id":"CVE-2026-65200","published":"2026-10-13T15:17:47.077","lastModified":"2026-10-16T19:56:15.773","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.","cvssScore":3.5,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","cwes":["CWE-191"],"vendors":[],"products":[],"references":[{"url":"https://www.runzero.com/advisories/huawei-malicious-device-integer-underflow-cve-2026-65200","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}