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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.

Published

2021-07-13T19:15:09.327

Last Modified

2024-11-21T05:49:24.240

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

8.6

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-287
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System vmware cloud_foundation < 3.10.2 Yes
Operating System vmware cloud_foundation < 4.3 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 7.0 Yes
Operating System vmware esxi 7.0 Yes
Operating System vmware esxi 7.0 Yes
Operating System vmware esxi 7.0 Yes
Operating System vmware esxi 7.0 Yes
Operating System vmware esxi 7.0 Yes
Operating System vmware esxi 7.0 Yes
References