CVE-2021-21975 (GCVE-0-2021-21975)
Vulnerability from cvelistv5 – Published: 2021-03-31 17:51 – Updated: 2026-08-12 03:55Summary
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)
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
3 references
| URL | Tags |
|---|---|
| https://www.vmware.com/security/advisories/VMSA-2… | x_refsource_MISC |
| http://packetstormsecurity.com/files/162349/VMwar… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| 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
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
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
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
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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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