Feed/CVE-2021-21994
CVE-2021-21994CRITICALCVSS 9.8

CVE-2021-21994

Published Jul 13, 2021·Updated Jun 16, 2026

NVD Description

SFCB (Small Footprint CIM Broker) as used in ESXi has an authentication bypass vulnerability. A malicious actor with network access to port 5989 on ESXi may exploit this issue to bypass SFCB authentication by sending a specially crafted request.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

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