CVE-2021-21975
KEVRansomware UseVMware Server Side Request Forgery in vRealize Operations Manager API
Description
Server Side Request Forgery (SSRF) in vRealize Operations Manager API prior to 8.4 may allow a malicious actor with network access to the vRealize Operations Manager API to perform a SSRF attack to steal administrative credentials.
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 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NPublishedMar 31, 2021
Last modifiedOct 2, 2026
Added to KEVJan 18, 2022
Remediation dueFeb 1, 2022
References
- packetstormsecurity.com/files/162349/VMware-vRealize-Operations-Manager-Server-Side-Request-Forgery-Code-Execution.htmlExploitThird Party Advisory
- vmware.com/security/advisories/VMSA-2021-0004.htmlVendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21975US Government Resource
0 recent articles mention this CVE
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Risk assessment · Critical
Actively exploited and used by ransomware crews. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1729 days
- Ransomware
- Used in known ransomware campaigns
- CVSS
- 7.5 HIGH
- EPSS (30-day exploit probability)
- 78.0% · top 1% of all CVEs
- Weakness
- CWE-918
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
- 5.Verify offline/immutable backups and segment the affected systems. This flaw is used for ransomware initial access.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.