OpenBMC IPMI Privilege Escalation via Retargeted RAKP 1

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-16140
StatePUBLISHED
AssignerrunZero
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-15 14:16:50 UTC
Updated2026-09-18 19:30:42 UTC
DescriptionOpenBMC's IPMI implementation, phosphor-net-ipmid, is vulnerable to a logic flaw where the authorization context of an existing session can be replaced with a target account while still maintaining the original integrity and encryption keys. Several downstream vendors implement phosphor-net-ipmid as their IPMI stack, such as NVIDIA and H3C. This issue effectively allows for privilege escalation without re-authentication.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from 44488dab-36db-4358-99f9-bc116477f914

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.002720000 probability, percentile 0.197440000 (date 2026-09-21)

Problem Types: CWE-863 | CWE-863 CWE-863 Incorrect Authorization

VersionSourceTypeScoreSeverityVector
3.144488dab-36db-4358-99f9-bc116477f914Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OpenBMC Phosphor-net-ipmid affected ba6efc502e6b1fabb8ed1ca677ae5eedd64b6361 git Not specified

References

ReferenceSourceLinkTags
www.runzero.com/blog/lights-out-exposed 44488dab-36db-4358-99f9-bc116477f914 www.runzero.com
www.runzero.com/advisories/openbmc-ipmi-privsec-rakp-cve-2026-16140 44488dab-36db-4358-99f9-bc116477f914 www.runzero.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: HD Moore of runZero (en)

CNA: Gadi Evron of Knostic (en)

CNA: Tod Beardsley of runZero (en)

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