CVE-2021-21973
Summary
| CVE | CVE-2021-21973 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-02-24 17:15:00 UTC |
| Updated | 2021-08-24 10:59:00 UTC |
| Description | The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure. This affects: VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2). |
Risk And Classification
EPSS: 0.903360000 probability, percentile 0.995990000 (date 2026-04-02)
CISA KEV: Listed on 2022-03-07; due 2022-03-21; ransomware use Unknown
Problem Types: CWE-918
CISA Known Exploited Vulnerability
| Vendor | VMware |
|---|---|
| Product | vCenter Server and Cloud Foundation |
| Name | VMware vCenter Server and Cloud Foundation Server Side Request Forgery (SSRF) Vulnerability |
| Required Action | Apply updates per vendor instructions. |
| Notes | https://nvd.nist.gov/vuln/detail/CVE-2021-21973 |
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Vmware | Cloud Foundation | All | All | All | All |
| Application | Vmware | Cloud Foundation | All | All | All | All |
| Application | Vmware | Vcenter Server | 6.5 | - | All | All |
| Application | Vmware | Vcenter Server | 6.5 | a | All | All |
| Application | Vmware | Vcenter Server | 6.5 | b | All | All |
| Application | Vmware | Vcenter Server | 6.5 | c | All | All |
| Application | Vmware | Vcenter Server | 6.5 | d | All | All |
| Application | Vmware | Vcenter Server | 6.5 | e | All | All |
| Application | Vmware | Vcenter Server | 6.5 | f | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u1d | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u1e | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u1g | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u2 | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u2b | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u2c | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u2d | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u2g | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u3 | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u3d | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u3f | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u3k | All | All |
| Application | Vmware | Vcenter Server | 6.5 | update1d | All | All |
| Application | Vmware | Vcenter Server | 6.5 | update1e | All | All |
| Application | Vmware | Vcenter Server | 6.5 | update1g | All | All |
| Application | Vmware | Vcenter Server | 6.5 | update2 | All | All |
| Application | Vmware | Vcenter Server | 6.5 | update2b | All | All |
| Application | Vmware | Vcenter Server | 6.5 | update2c | All | All |
| Application | Vmware | Vcenter Server | 6.5 | update2d | All | All |
| Application | Vmware | Vcenter Server | 6.5 | update2g | All | All |
| Application | Vmware | Vcenter Server | 6.5 | update3 | All | All |
| Application | Vmware | Vcenter Server | 6.5 | update3d | All | All |
| Application | Vmware | Vcenter Server | 6.5 | update3f | All | All |
| Application | Vmware | Vcenter Server | 6.5 | update3k | All | All |
| Application | Vmware | Vcenter Server | 6.7 | - | All | All |
| Application | Vmware | Vcenter Server | 6.7 | a | All | All |
| Application | Vmware | Vcenter Server | 6.7 | b | All | All |
| Application | Vmware | Vcenter Server | 6.7 | d | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u1 | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u1b | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u2 | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u2a | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u2c | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u3 | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u3a | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u3b | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u3f | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u3g | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u3j | All | All |
| Application | Vmware | Vcenter Server | 6.7 | update1 | All | All |
| Application | Vmware | Vcenter Server | 6.7 | update1b | All | All |
| Application | Vmware | Vcenter Server | 6.7 | update2 | All | All |
| Application | Vmware | Vcenter Server | 6.7 | update2a | All | All |
| Application | Vmware | Vcenter Server | 6.7 | update2c | All | All |
| Application | Vmware | Vcenter Server | 6.7 | update3 | All | All |
| Application | Vmware | Vcenter Server | 6.7 | update3a | All | All |
| Application | Vmware | Vcenter Server | 6.7 | update3b | All | All |
| Application | Vmware | Vcenter Server | 6.7 | update3f | All | All |
| Application | Vmware | Vcenter Server | 6.7 | update3g | All | All |
| Application | Vmware | Vcenter Server | 6.7 | update3j | All | All |
| Application | Vmware | Vcenter Server | 7.0 | - | All | All |
| Application | Vmware | Vcenter Server | 7.0 | a | All | All |
| Application | Vmware | Vcenter Server | 7.0 | b | All | All |
| Application | Vmware | Vcenter Server | 7.0 | c | All | All |
| Application | Vmware | Vcenter Server | 7.0 | d | All | All |
| Application | Vmware | Vcenter Server | 7.0 | u1 | All | All |
| Application | Vmware | Vcenter Server | 7.0 | u1a | All | All |
| Application | Vmware | Vcenter Server | 7.0 | update1 | All | All |
| Application | Vmware | Vcenter Server | 7.0 | update1a | All | All |
| Application | Vmware | Vcenter Server | 6.5 | - | All | All |
| Application | Vmware | Vcenter Server | 6.5 | a | All | All |
| Application | Vmware | Vcenter Server | 6.5 | b | All | All |
| Application | Vmware | Vcenter Server | 6.5 | c | All | All |
| Application | Vmware | Vcenter Server | 6.5 | d | All | All |
| Application | Vmware | Vcenter Server | 6.5 | e | All | All |
| Application | Vmware | Vcenter Server | 6.5 | f | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u1d | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u1e | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u1g | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u2 | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u2b | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u2c | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u2d | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u2g | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u3 | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u3d | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u3f | All | All |
| Application | Vmware | Vcenter Server | 6.5 | u3k | All | All |
| Application | Vmware | Vcenter Server | 6.7 | - | All | All |
| Application | Vmware | Vcenter Server | 6.7 | a | All | All |
| Application | Vmware | Vcenter Server | 6.7 | b | All | All |
| Application | Vmware | Vcenter Server | 6.7 | d | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u1 | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u1b | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u2 | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u2a | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u2c | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u3 | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u3a | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u3b | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u3f | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u3g | All | All |
| Application | Vmware | Vcenter Server | 6.7 | u3j | All | All |
| Application | Vmware | Vcenter Server | 7.0 | - | All | All |
| Application | Vmware | Vcenter Server | 7.0 | a | All | All |
| Application | Vmware | Vcenter Server | 7.0 | b | All | All |
| Application | Vmware | Vcenter Server | 7.0 | c | All | All |
| Application | Vmware | Vcenter Server | 7.0 | d | All | All |
| Application | Vmware | Vcenter Server | 7.0 | u1 | All | All |
| Application | Vmware | Vcenter Server | 7.0 | u1a | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| VMSA-2021-0002 | CONFIRM | www.vmware.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
No vendor comments have been submitted for this CVE.