CVE-2021-21994

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 v3.1

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

CVSS v2.0

6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS

1.16% chance of exploitation in the next 30 days, 65th percentile

Published

2021-07-13

Updated

2024-08-03

Proof-of-concept exploits (1)

• mreza-en/cve-2021-21994_POC

References

• CVE Record
• NVD entry

Related

• CVE-2021-21990
• CVE-2021-22000
• CVE-2021-21985
• CVE-2021-22005
• CVE-2021-21983
• CVE-2021-22006