Vulnerability · Published Sep 15, 2026 · Assigned by runZero

CVE-2026-16140OpenBMC IPMI Privilege Escalation via Retargeted RAKP 1

High 8.8

In plain English

A high-severity incorrect authorization in phosphor-net-ipmid from OpenBMC. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.4%top 66.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 products (as reported)

Vendor	Product	Versions
OpenBMC	phosphor-net-ipmid	0 – through ba6efc502e6b1fabb8ed1ca677ae5eedd64b6361

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

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