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4 vulnerabilities found for openBMC by Huawei
CVE-2026-65200 (GCVE-0-2026-65200)
Vulnerability from nvd – Published: 2026-10-13 14:19 – Updated: 2026-10-14 18:58
VLAI
EPSS
VEX
Title
Huawei malicious on-bus PLDM or NCSI device can drive out-of-bounds-heap reads via short MCTP responses
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CNA · runZero (v2.0.3)
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 18:57 UTC
CWE
- CWE-191 - Integer underflow (wrap or wraparound)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.runzero.com/advisories/huawei-malicio… | third-party-advisory |
Date Public
2026-10-13 14:00
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CVE-2026-65199 (GCVE-0-2026-65199)
Vulnerability from nvd – Published: 2026-10-13 14:19 – Updated: 2026-10-14 18:58
VLAI
EPSS
VEX
Title
Huawei openUBMC low-privilege SNMP to administrator privilege escalation
Summary
openUBMC assigns the full privilege set to pseudo-identities representing SNMP callers. An authenticated, but low-privilege, SNMP user can therefore invoke mapped backend operations as an administrative identity. In `route_mapper/account.lua`, `get_user_privilege` returns the complete nine-privilege set for a `special_users` group that includes the `SNMPv1_v2c` pseudo-user.
Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CNA · runZero (v2.0.3)
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 18:58 UTC
CWE
- CWE-266 - Incorrect privilege assignment
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.runzero.com/advisories/huawei-openUBM… | third-party-advisory |
Date Public
2026-10-13 14:00
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CVE-2026-65200 (GCVE-0-2026-65200)
Vulnerability from cvelistv5 – Published: 2026-10-13 14:19 – Updated: 2026-10-14 18:58
VLAI
EPSS
VEX
Title
Huawei malicious on-bus PLDM or NCSI device can drive out-of-bounds-heap reads via short MCTP responses
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CNA · runZero (v2.0.3)
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 18:57 UTC
CWE
- CWE-191 - Integer underflow (wrap or wraparound)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.runzero.com/advisories/huawei-malicio… | third-party-advisory |
Date Public
2026-10-13 14:00
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CVE-2026-65199 (GCVE-0-2026-65199)
Vulnerability from cvelistv5 – Published: 2026-10-13 14:19 – Updated: 2026-10-14 18:58
VLAI
EPSS
VEX
Title
Huawei openUBMC low-privilege SNMP to administrator privilege escalation
Summary
openUBMC assigns the full privilege set to pseudo-identities representing SNMP callers. An authenticated, but low-privilege, SNMP user can therefore invoke mapped backend operations as an administrative identity. In `route_mapper/account.lua`, `get_user_privilege` returns the complete nine-privilege set for a `special_users` group that includes the `SNMPv1_v2c` pseudo-user.
Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CNA · runZero (v2.0.3)
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 18:58 UTC
CWE
- CWE-266 - Incorrect privilege assignment
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.runzero.com/advisories/huawei-openUBM… | third-party-advisory |
Date Public
2026-10-13 14:00
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{
"tags": [
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"url": "https://www.runzero.com/advisories/huawei-openUBMC-snmp-privsec-cve-2026-65199"
}
],
"source": {
"discovery": "EXTERNAL"
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"title": "Huawei openUBMC low-privilege SNMP to administrator privilege escalation",
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"dateReserved": "2026-07-21T20:14:38.328Z",
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