CVE-2026-16140

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.

CVSS Vector

References

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