CVE-2021-22017
VMware vCenter Server Improper Access Control
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run vCenter Server, fix it now.
CISA required action: Apply updates per vendor instructions.
US federal civilian agencies must remediate by Jan 24, 2022.
Patch status
Official fix available since
Apply the vendor's update to every affected system. Check the fixed-in versions below where known.
Basis: NVD patch reference
Description
Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to bypass proxy leading to internal endpoints being accessed.
Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.
Affected products
| Product | Vendor | Affected versions | Source |
|---|---|---|---|
| vCenter Server | VMware (Broadcom) | — | KEV |
| VMware vCenter Server | VMware (Broadcom) | 6.7 | NVD |
Sources: KEV = CISA Known Exploited Vulnerabilities catalog; NVD = NIST National Vulnerability Database.
Intelligence timeline
Developments from the last 30 days, newest first.
- CVSS scoredUpdateKEV
CVE-2021-22017 scored CVSS 5.3: VMware vCenter Server, VMware vCenter Server Improper Access Control
CISA lists this as exploited in the wild. Unpatched vCenter Server systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
- Patch releasedUpdateKEV
Patch released for CVE-2021-22017: VMware vCenter Server, VMware vCenter Server Improper Access Control
An official fix is now available for VMware vCenter Server. This vulnerability is being exploited, so apply it promptly.
Basis: NVD patch reference
1 earlier event is available with a subscription. See plans.
Coverage
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