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CVE-2021-21993

MEDIUM
6.5
CVSS Score
Published: September 23, 2021 at 11:37 AM UTC
Updated: June 17, 2026 at 03:36 AM UTC
2 products affected across 1 vendorCloud FoundationvCenter Server

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.9%

Description

The vCenter Server contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in vCenter Server Content Library. An authorised user with access to content library may exploit this issue by sending a POST request to vCenter Server leading to information disclosure.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Cloud Foundation· VMware
95%
v < 7.03.0 ≤ v < 5.0
Affected range stops below 5.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.0, so it looks safe — our inference, not a vendor statement
vCenter Server· VMware
95%
v < 7.06.56.77.0
Affected range stops below 7.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://www.vmware.com/security/advisories/VMSA-2021-0020.html

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-918

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