CVE-2026-16140

Summary

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 Software

Weaknesses

• CWE-863: CWE-863 Incorrect Authorization

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://www.runzero.com/advisories/openbmc-ipmi-privsec-rakp-cve-2026-16140/
• https://www.runzero.com/blog/lights-out-exposed/

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