Medium severity5.3CISA KEVNVD Advisory· Published Feb 24, 2021· Updated Jun 17, 2026
CVE-2021-21973
CVE-2021-21973
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).
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
45cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*range: >=3.0,<3.10.1.2
- (no CPE)range: 4.x before 4.2, 3.x before 3.10.1.2
cpe:2.3:a:vmware:vcenter_server:6.5:-:*:*:*:*:*:*+ 41 more
- cpe:2.3:a:vmware:vcenter_server:6.5:-:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:a:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:b:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:c:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:d:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:e:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:f:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update1d:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update1e:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update1g:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update2:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update2b:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update2c:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update2d:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update2g:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update3:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update3d:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update3f:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update3k:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:-:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:a:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:b:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:d:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update1:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update1b:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update2:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update2a:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update2c:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3a:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3b:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3f:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3g:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3j:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:-:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:a:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:b:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:c:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:d:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:update1:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:update1a:*:*:*:*:*:*
- (no CPE)range: 7.x before 7.0 U1c, 6.7 before 6.7 U3l, 6.5 before 6.5 U3n
Patches
Vulnerability mechanics
References
2- www.vmware.com/security/advisories/VMSA-2021-0002.htmlnvdVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
News mentions
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