CVE-2026-16140

OpenBMC IPMI Privilege Escalation via Retargeted RAKP 1

HIGH
8.8
CVSS Score
Published: September 15, 2026 at 01:57 PM UTC
Updated: September 18, 2026 at 07:49 PM UTC
1 product affected across 1 vendorPhosphor .NET Ipmid

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

OpenBMC'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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ ba6efc502e6b1fabb8ed1ca677ae5eedd64b6361

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHrunZero
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-863

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