Supermicro BMC firmware update validation bypass

published 2026-01-16 9 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-2961

cvss: 7.2; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits: 0; none known

There is a vulnerability in the Supermicro BMC firmware validation logic at Supermicro MBD-X12STW-F . An attacker can update the system firmware with a specially crafted image.

Patch / fix

fixed in 1

SMCI X12STW-F fixed in 01.08.08

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 9 mo ago (2026-01-17)

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

SMCI X12STW-F

Classification

Weakness

CWE-347 Improper Verification of Cryptographic Signature

References

supermicro.com /en/support/security_BMC_IPMI_Jan_2026

Sources

CVE List CVE-2025-12006
NVD CVE-2025-12006

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