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

Vulnerability from cvelistv5 – Published: 2021-03-31 17:51 – Updated: 2026-08-12 03:55
VLAI CISA Shadowserver 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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2021-03-31 00:00 UTC
CWE
  • Server Side Request Forgery
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a VMware vRealize Operations Affected: VMware vRealize Operations prior to 8.4
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: c2db1b2c-c85e-4456-8b65-95e7b7bf03a0

Vulnerability ID: CVE-2021-21975

Status: Confirmed

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

Exploited: Yes

Timestamps
First Seen: 2022-01-18
Asserted: 2022-01-18
Scope
Notes: KEV entry: 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: 2026-02-02 12:28 UTC | Updated: 2026-02-06 07:17 UTC
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 0dbc0e55-fa90-42c4-9822-715313766dbd

Vulnerability ID: CVE-2021-21975

Status: Confirmed

Status Updated: 2026-07-20 00:00 UTC

Exploited: Yes

Characteristics
Severity: 75.0
Timestamps
First Seen: 2023-10-14
Asserted: 2023-10-14
Last Seen: 2026-07-20
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: VMware / vRealize Operations Manager API | Class: device-management-platform | Severity: High (CVSS 7.5) | IoT: no | In CISA KEV: yes | Honeypot connections on 2026-07-20: 41
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class device-management-platform
7D Avg 0
Vendor VMware
30D Avg 1
90D Avg 2
Product vRealize Operations Manager API
Cisa Kev yes
Connections 41
Observation Date 2026-07-20
Vulnerability Class CVSS
Vulnerability Score 7.5
Vulnerability Severity High
References
Created: 2026-06-30 09:23 UTC | Updated: 2026-07-22 01:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 3a424ad4-d7ad-4f8c-8e13-c3cba5699a1c

Vulnerability ID: CVE-2021-21975

Status: Confirmed

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

Exploited: Yes

Timestamps
First Seen: 2022-01-18
Asserted: 2022-01-18
Scope
Notes: KEVIntel entry: 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: 7.5 (HIGH) | EPSS: 0.78435 | Used in malware: yes | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Confirmed Compromise

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.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...
Vendor VMware
Product VMware vRealize Operations
Added Date 2022-01-18T00:00:00.000Z
Cvss Score 7.5
Epss Score 0.78435
Cvss Severity HIGH
Epss Percentile 0.99529
Used In Malware yes
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 14:04 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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      "product_status:known_not_affected": "1",
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      "status": "final",
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      "version": "3"
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}



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Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.