FKIE_CVE-2026-65200
Vulnerability from fkie_nvd - Published: 2026-10-13 15:17 - Updated: 2026-10-14 19:17
Severity
Summary
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.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "openBMC",
"vendor": "Huawei",
"versions": [
{
"lessThanOrEqual": "26.06",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"source": "44488dab-36db-4358-99f9-bc116477f914"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"id": "CVE-2026-65200",
"lastModified": "2026-10-14T19:17:19.040",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "PHYSICAL",
"availabilityImpact": "LOW",
"baseScore": 3.5,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
"version": "3.1"
},
"exploitabilityScore": 0.9,
"impactScore": 2.5,
"source": "44488dab-36db-4358-99f9-bc116477f914",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "44488dab-36db-4358-99f9-bc116477f914",
"ssvcData": {
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CNA",
"version": "2.0.3"
}
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-65200",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-14T18:57:49.030835Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-10-13T15:17:47.077",
"references": [
{
"source": "44488dab-36db-4358-99f9-bc116477f914",
"url": "https://www.runzero.com/advisories/huawei-malicious-device-integer-underflow-cve-2026-65200"
}
],
"sourceIdentifier": "44488dab-36db-4358-99f9-bc116477f914",
"vulnStatus": "Received",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-191"
}
],
"source": "44488dab-36db-4358-99f9-bc116477f914",
"type": "Secondary"
}
]
}
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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