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AMI MegaRAC SP-X and OpenBMC

CVE-2021-39296

critical 10CVSS 3.1 · published 2021-09-09 · modified 2026-06-17

In OpenBMC 2.9, crafted IPMI messages allow an attacker to bypass authentication and gain full control of the system.

Affected versions (NVD)

ProductVersions
openbmc2.9.0

What to do

NVD gives no version range for this CVE yet, so this page cannot name an update version. Read the vendor advisory for the fixed firmware.

NVD names no vendor advisory for it. Look it up at AMI and OpenBMC security advisories (search for CVE-2021-39296).

How this page decided
Severity and CVSS: the primary NVD score (version 3.1). Affected versions: the CPE ranges in the NVD record, modified 2026-06-17. Exploited: the CISA KEV field of the NVD record. Whether you are affected needs your firmware version; this page does not know it. It is not tested against a device.

Do you run it?

Paste your BMC's Redfish answers into the Redfish Inspector: it compares the firmware version with the NVD ranges, in your browser. Or scan every BMC with the free scan.

Source: NVD CVE-2021-39296. PWX for MegaRAC and OpenBMC

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