Supermicro BMC contains Unprotected IPMI Commands Accepted on Active RMCP+ Sessions vulnerability

published 2026-10-27 13 d ago modified 2026-11-04 5 d ago also EUVD-2026-110633

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits: 0; none known

The BMC does not correctly enforce integrity and encryption requirements for IPMI commands. An attacker may be able to craft packets that execute arbitrary commands on an active session.

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 5 d ago (2026-11-04)

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

SMCI X12SPI

Classification

Weakness

CWE-306 Missing Authentication for Critical Functionality

References

supermicro.com /en/support/security_BMC_IPMI_Oct_2026_1

Sources

CVE List CVE-2026-18450
NVD CVE-2026-18450

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary