CVE-2021-21994
CRITICAL 9.8EPSS 1.2%
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.
- Affected
- VMware ESXi and VMware Cloud Foundation
- CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P - EPSS
- 1.17% chance of exploitation in the next 30 days, 67th percentile
- Published
- 2021-07-13
- Updated
- 2024-08-03
Proof-of-concept exploits (1)
- mreza-en/cve-2021-21994_POC0★ · 2026-08-15