Critical 9.8Known exploited (CISA KEV)Published Mar 31, 2021

CVE-2021-21975Server 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 Serve…

Updated under an hour ago (Oct 27, 2026, 9:40 PM ET)

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It affects vmware cloud_foundation and 2 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Jan 18, 2022; federal agencies had to remediate by Feb 1, 2022, and it is known to be used in ransomware. Treat that date as your deadline.

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Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-918
Known exploited: Added to CISA KEV Jan 18, 2022; federal remediation due Feb 1, 2022; known ransomware useApply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 78.00% (percentile 100)
Assigned by: vmware
NVD analysis: Analyzed
Record last updated: Oct 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

vmware cloud_foundation vmware:cloud_foundation	3.0; 3.0.1; 3.0.1.1; 3.5; 3.5.1; 3.7; 3.7.1; 3.7.2; and 7 more ranges	NVD
vmware vrealize_operations_manager vmware:vrealize_operations_manager	7.0.0; 7.5.0; 8.0.0; 8.0.1; 8.1.0; 8.1.1; 8.2.0; 8.3.0	NVD
vmware vrealize_suite_lifecycle_manager vmware:vrealize_suite_lifecycle_manager	8.0; 8.0.1; 8.1; 8.2	NVD

References

References

https://www.vmware.com/security/advisories/VMSA-2021-0004.html	x-refsource-misc, vendor-advisory
http://packetstormsecurity.com/files/162349/VMware-vRealize-Operations-Manager-Server-Side-Request-Forgery-Code-Execution.html	x-refsource-misc, exploit, third-party-advisory, vdb-entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21975	us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.