How severe is CVE-2021-21975?

CVE-2021-21975 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-21975 being actively exploited?

Yes. CVE-2021-21975 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-01-18, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2021-21975?

CVE-2021-21975 primarily affects Vmware Cloud Foundation. In total, 27 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-21975?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2021-21975 have an EU (EUVD) identifier?

Yes. CVE-2021-21975 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-9146. It is also flagged as exploited in the EUVD (since 2022-01-18).

When was CVE-2021-21975 published?

CVE-2021-21975 was published on 2021-03-31 and last updated on 2026-08-12.

CVE-2021-21975

CVE-2021-21975 is a high-severity vulnerability in Vmware Cloud Foundation with a CVSS 3.x base score of 7.5. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-01-18). The underlying weakness is classified as CWE-918.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 78% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-01-18)
EU (EUVD) id: EUVD-2021-9146
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-01-18)
Weakness: CWE-918
Affected product: Vmware Cloud Foundation
Published: 2021-03-31
Last modified: 2026-08-12

Description

Server Side Request Forgery in vRealize Operations Manager API (CVE-2021-21975) prior to 8.4 may allow a malicious actor with network access to the vRealize Operations Manager API can perform a Server Side Request Forgery attack to steal administrative credentials.

Frequently asked questions

What is CVE-2021-21975?: Server Side Request Forgery in vRealize Operations Manager API (CVE-2021-21975) prior to 8.4 may allow a malicious actor with network access to the vRealize Operations Manager API can perform a Server Side Request Forgery attack to steal administrative credentials.
How severe is CVE-2021-21975?: CVE-2021-21975 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-21975 being actively exploited?: Yes. CVE-2021-21975 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-01-18, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2021-21975?: CVE-2021-21975 primarily affects Vmware Cloud Foundation. In total, 27 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-21975?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2021-21975 have an EU (EUVD) identifier?: Yes. CVE-2021-21975 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-9146. It is also flagged as exploited in the EUVD (since 2022-01-18).
When was CVE-2021-21975 published?: CVE-2021-21975 was published on 2021-03-31 and last updated on 2026-08-12.

References

Affected products (27)

cpe:2.3:a:vmware:cloud_foundation:3.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:3.0.1.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:3.5:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:3.5.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:3.7:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:3.7.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:3.7.2:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:3.8:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:3.8.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:3.9:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:3.9.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:3.10:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:4.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:cloud_foundation:4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vrealize_operations_manager:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vrealize_operations_manager:7.5.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vrealize_operations_manager:8.0.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vrealize_operations_manager:8.0.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vrealize_operations_manager:8.1.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vrealize_operations_manager:8.1.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vrealize_operations_manager:8.2.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vrealize_operations_manager:8.3.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vrealize_suite_lifecycle_manager:8.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vrealize_suite_lifecycle_manager:8.0.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vrealize_suite_lifecycle_manager:8.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:vrealize_suite_lifecycle_manager:8.2:*:*:*:*:*:*:*

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