CVE-2021-21975 (GCVE-0-2021-21975)

Vulnerability from cvelistv5 – Published: 2021-03-31 17:51 – Updated: 2026-10-01 20:01
VLAI CISA Previdian
Summary
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.
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 03:55 UTC
CWE
  • Server Side Request Forgery
  • CWE-918 - Server-Side Request Forgery (SSRF)
Impacted products
Vendor Product Version
n/a VMware vRealize Operations Affected: VMware vRealize Operations prior to 8.4
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2021-21975

Status: Confirmed

Status Updated: 2022-01-18 01:00 CET

Exploited: Yes


Timestamps
First Seen: 2022-01-18
Asserted: 2022-01-18

Scope
Notes: VMware Server Side Request Forgery in vRealize Operations Manager API | Affected: VMware / 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. | Required action: Apply updates per vendor instructions. | Due date: 2022-02-01 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-21975

Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev


Details
Cwes CWE-918
Feed CISA Known Exploited Vulnerabilities Catalog
Product vRealize Operations Manager API
Due Date 2022-02-01
Date Added 2022-01-18
Vendorproject VMware
Vulnerabilityname VMware Server Side Request Forgery in vRealize Operations Manager API
Knownransomwarecampaignuse Known

References

Created: 2026-10-02 08:10 CEST | Updated: 2026-10-02 08:10 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2021-21975

Status: Confirmed

Status Updated: 2022-01-18 01:00 CET

Exploited: Yes


Timestamps
First Seen: 2022-01-18
Asserted: 2022-01-18

Scope
Notes: 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... | Affected: VMware / VMware vRealize Operations | CVSS: 9.8 (CRITICAL) | EPSS: 0.7829 | Used in malware: yes | Not yet in CISA KEV: False

Evidence

Type: Public Report

Signal: Confirmed Compromise

Confidence: 70%

Source: previdian


Details
Feed Previdian (previdian.com)
Title 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...
Cve Id CVE-2021-21975
Vendor VMware
Ghsa Id None
Product VMware vRealize Operations
Added Date 2022-01-18T00:00:00.000Z
Cvss Score 9.8
Epss Score 0.7829
Previous Ids
Cvss Severity CRITICAL
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.99569
Used In Malware yes
Vulnerability Id CVE-2021-21975
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False

References

Created: 2026-10-02 09:10 CEST | Updated: 2026-10-02 09:10 CEST
Show details on NVD website

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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