CVE-2021-21975
VMware Server Side Request Forgery in vRealize Operations Manager API
- Critical 9.8
- Exploited: added to CISA KEV 18 Jan 2022
- Used in ransomware campaigns
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.
Key facts
- Published
- 31 Mar 2021
- Last changed
- 1 Oct 2026
- Assigned by
- vmware
- KEV added
- 18 Jan 2022
- KEV fix due
- 1 Feb 2022
- Used in ransomware
- Yes, according to CISA
- EPSS
- 78.001% likely to be exploited in the next 30 days, higher than 99.58% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 9.8CVSS 3.1, Criticalfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | VMware vRealize Operations |
|
Timeline
- 31 Mar 2021 Published
- 18 Jan 2022 Added to the CISA KEV catalogue