CASCACascade Atlas

Evidence dossier

CVE-2021-21975

Exploited in the wild (CISA KEV since Jan 18, 2022). NVD reports CVSS 3.1 7.5. Severity assessments differ within at least one CVSS version. EPSS estimates 78.0% exploit likelihood as of Oct 22, 2026.

76.4–94.5Priority evidence range
Evidence through Oct 22, 2026, 6:07 PM UTC

As of Oct 22, 2026

Normalized restatement

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.

State
PUBLISHED
Published
Mar 31, 2021
Updated
Oct 1, 2026
Evidence coverage
72%

Evidence chronology

What was known when

Download this view's receipt →
  1. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: VMware Server Side Request Forgery in vRealize Operations Manager API

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    VMware Server Side Request Forgery in vRealize Operations Manager API
    Original evidence ↗
  2. Source dateSource date omittedFirst observed by CASCA
    CISA-ADP

    Record text: CISA ADP Vulnrichment

    Inspect raw assertion
    Field
    container
    Value
    CISA ADP Vulnrichment
    Original evidence ↗
  3. Source dateSource date omittedFirst observed by CASCA
    CVE Program

    Record text: CVE Program Container

    Inspect raw assertion
    Field
    container
    Value
    CVE Program Container
    Original evidence ↗
  4. Source dateSource date omittedFirst observed by CASCA
    vmware

    Record text: 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.

    Inspect raw assertion
    Field
    container
    Value
    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.
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 78% probability · 99.58th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.780010000000; percentile 0.995760000000
    Original evidence ↗

Assessments differ

NVD7.5CVSS 3.1 · source date omitted
NVD5.0CVSS 2.0 · source date omitted
CVE Program source9.8CVSS 3.1 · source date omitted

Values are shown separately by source and CVSS version.

ExploitationCatalog member

CISA KEV · catalog date Jan 18, 2022 · first observed Sep 1, 2026

Exploit likelihood78.00%

FIRST EPSS · score date Oct 22, 2026 · 99.6th percentile · first observed Oct 22, 2026

SeverityAssessments differ

NVD · CVSS 3.1 · first observed Oct 2, 2026 · values shown separately below

Evidence detail

Source limits and decisions

Why each evidence state has this value

casca-unknown-reasons-v1
Exploitation statusLast verified source snapshot retained

The last verified source boundary remains in force for this claim.

Revision
evidence-policy-v1.1.0
Cutoff
Oct 22, 2026
Resolution
Review source contract
Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Oct 22, 2026
Resolution
None
Severity assessmentAssessments differ

Eligible assertions materially conflict and remain visible side by side.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Oct 22, 2026
Resolution
Resolve conflict
Affected productsSource-reported scope

The cited source assertion is retained while canonical product linkage remains open.

Revision
casca-factor-d-obligations-v1
Cutoff
Oct 22, 2026
Resolution
Resolve identity

Source comparison

Who said what

CISA KEVOriginal assertion
Exploitation cataloged

VMware Server Side Request Forgery in vRealize Operations Manager API

Inspect raw assertion
Field
observed_exploitation
Value
VMware Server Side Request Forgery in vRealize Operations Manager API
Source dateFirst observed by CASCAOriginal evidence ↗
CISA-ADPIndependent enrichment
Record text

CISA ADP Vulnrichment

Inspect raw assertion
Field
container
Value
CISA ADP Vulnrichment
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CVE ProgramDerivative copy
Record text

CVE Program Container

Inspect raw assertion
Field
container
Value
CVE Program Container
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
vmwareOriginal assertion
Record text

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.

Inspect raw assertion
Field
container
Value
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.
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

78% probability · 99.58th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.780010000000; percentile 0.995760000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
27Underlying assertions
3Canonical products
27Target assertions
0Constraint assertions

Grouped from 1 configuration nodes in this exact snapshot. Visual grouping is navigational; asset exposure and root cause require cited evidence.

Identity source boundaries
  • Cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z27d65b0f-b718-4b4f-bb79-c47c68d09dfa
  • Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z955dae73-7302-438b-aee1-058d7cc5d48e

4 scope groups

vmware · source assertedn/aVMware vRealize OperationsDirect source scope
Affected: VMware vRealize Operations prior to 8.4
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "VMware vRealize Operations prior to 8.4"}]
NVD CPE · APPLICATIONvmwarecloud_foundationVulnerable target · 15 assertions
Version 3.0; Version 3.0.1; Version 3.0.1.1; Version 3.10; Version 3.5; Version 3.5.1; Version 3.7; Version 3.7.1; Version 3.7.2; Version 3.8; Version 3.8.1; Version 3.9; Version 3.9.1; Version 4.0; Version 4.0.1Canonical identity product-29d7e06677052d6292d0854ba656869395ea8e26a3dfe12b466a234813f9d5c3Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:a:vmware:cloud_foundation:3.9:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 10
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    f97ba12f-a60d-4398-9ca8-de2f7bacba8d
  2. cpe:2.3:a:vmware:cloud_foundation:3.10:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 12
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    89656a51-0840-4a27-b05b-7e54b0cf0521
  3. cpe:2.3:a:vmware:cloud_foundation:3.0.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    36847ad6-88cc-4228-ab4e-5161b381267c
  4. cpe:2.3:a:vmware:cloud_foundation:4.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 13
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    38eb0c0c-56cf-4a8f-a36f-e0e180b9059e
  5. cpe:2.3:a:vmware:cloud_foundation:3.5:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    0bf5cf56-8de1-42f5-9ec1-e5666dd7fa59
  6. cpe:2.3:a:vmware:cloud_foundation:3.8.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 9
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    298b797f-c3b6-445c-aadb-8633b446f10f
  7. cpe:2.3:a:vmware:cloud_foundation:3.0.1.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    6fc3c214-defc-48d9-8728-31f19095375e
  8. cpe:2.3:a:vmware:cloud_foundation:3.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    6beacd8d-30ef-44fe-839b-da69e6ced23a
  9. cpe:2.3:a:vmware:cloud_foundation:3.9.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 11
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    e19009eb-02d3-424a-947d-7b66efcce422
  10. cpe:2.3:a:vmware:cloud_foundation:3.7.2:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 7
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    3e9ab6ff-d508-42ff-8fb9-24b96ae2f03f
  11. cpe:2.3:a:vmware:cloud_foundation:3.7:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 5
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    8266fd66-3bb6-4720-9d9f-06efb38fa4b6
  12. cpe:2.3:a:vmware:cloud_foundation:4.0.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 14
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a54544f5-5929-4609-a91c-fca0fdbfe862
  13. cpe:2.3:a:vmware:cloud_foundation:3.8:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 8
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    328785ae-390c-4ca2-9771-4a26387e4e3e
  14. cpe:2.3:a:vmware:cloud_foundation:3.5.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 4
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    36668618-33c3-460a-879b-a9741405c9d0
  15. cpe:2.3:a:vmware:cloud_foundation:3.7.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 6
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    8d4c25d3-bc49-4727-b7a2-28c0f2e647ec
NVD CPE · APPLICATIONvmwarevrealize_operations_managerVulnerable target · 8 assertions
Version 7.0.0; Version 7.5.0; Version 8.0.0; Version 8.0.1; Version 8.1.0; Version 8.1.1; Version 8.2.0; Version 8.3.0Canonical identity product-efff12cdb8f1bc4b1da81ca067d339383b98591301a2de6fdf288fa1335c8edeLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:a:vmware:vrealize_operations_manager:8.0.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 17
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    b5f35204-5a57-4086-b782-77a25471f9ea
  2. cpe:2.3:a:vmware:vrealize_operations_manager:8.3.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 22
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    c0256d20-63d3-4de9-9637-94033f11fc7c
  3. cpe:2.3:a:vmware:vrealize_operations_manager:8.2.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 21
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    7b612fda-4210-44fe-9b5c-f678ea2cd6fd
  4. cpe:2.3:a:vmware:vrealize_operations_manager:7.5.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 16
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    6bc6471f-2fb5-4c7a-9b5d-0b08a8e2c08c
  5. cpe:2.3:a:vmware:vrealize_operations_manager:7.0.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 15
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    b7985ea2-e167-4bb9-91ca-d57110413b63
  6. cpe:2.3:a:vmware:vrealize_operations_manager:8.1.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 20
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    4fcffa39-f7ea-4065-b0b5-a1e2b120eba0
  7. cpe:2.3:a:vmware:vrealize_operations_manager:8.1.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 19
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    76a32960-1c18-4da5-a870-c15c432b6ce3
  8. cpe:2.3:a:vmware:vrealize_operations_manager:8.0.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 18
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    536c689b-f40a-4090-b7f9-3d16c6b2a82c
NVD CPE · APPLICATIONvmwarevrealize_suite_lifecycle_managerVulnerable target · 4 assertions
Version 8.0; Version 8.0.1; Version 8.1; Version 8.2Canonical identity product-4ad001f30ef4cc5afdebb7054af18efd4d2c5adeadb66566d944f7bd4f2faeceLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:a:vmware:vrealize_suite_lifecycle_manager:8.0.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 24
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a06c29ab-1eaf-43ef-96c3-9e3468911b2f
  2. cpe:2.3:a:vmware:vrealize_suite_lifecycle_manager:8.2:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 26
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    cfb84c30-ee5d-4c15-a74e-7b2b3e0ded4d
  3. cpe:2.3:a:vmware:vrealize_suite_lifecycle_manager:8.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 23
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    e3318d91-40ac-4649-8fcd-4557c8f934b9
  4. cpe:2.3:a:vmware:vrealize_suite_lifecycle_manager:8.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 25
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    43723ec2-295e-4af7-b654-70f9e42f4807

Affected-product evidence

Accepted scope and product mapping

0 canonical links · 2 source-reported links

Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class
Direct cve affected
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
fa3379fa-c12c-49b9-ad50-d2d9ae564153
Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class
Nvd cpe vulnerable target
Assertions
27
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
04fdec7d-0cff-4a70-8f3b-b34d2dd0b3081610171c-827a-4fdb-86b9-96a21f50e5211dd3a5f0-a199-4a20-a0e8-7cbee11352601f5b893d-3644-44a3-99e6-4a1a322d129827639115-b7f6-410e-b976-a27d67e7d33a3ce7707a-32ae-4e29-9a19-95dbfd750526448caecc-bd6d-4a42-989f-a95c1612abdd5695c170-f37e-4a6f-8ed7-07b11864273467599b57-518c-464e-bcab-695daf83f40d857b487a-ee97-43f0-97ac-3ad1d24a167e9326b332-329c-40ed-a5ba-21d203516ce9960ec551-922c-4449-a161-4de90921907c99f1bbe5-3789-4447-9fe9-8f40b0cca774a11a209b-e4b5-46bb-b7e3-688f025a0d37b0496ec3-f7d8-434c-9ec2-2ab77b7d6fcdb98b1e12-7d09-4770-a458-cb3e734f7a71d817f7d4-ec27-4989-9c4a-f69ebe6459bdda07fcba-e4d1-4860-aa1f-782928ec1de0dd862717-ae30-4773-b67f-c837bc51ce6ee1ddc3c9-74dc-4a92-bf72-80795278054fe1e35786-9afa-44a6-90a0-9e63aa7b21a4e220bddd-8689-4507-9cc9-9e739de09bebe22fd432-6495-4e39-a56a-b2fea2b695efe760ec37-62b9-421b-b883-5d35da64065ce836ff5e-8a49-4790-8dbb-c0a00e7bd392fa2c7f17-ede7-484c-a437-25f40fb7fb1afb725eda-1a09-4c1d-bbe3-f2419235304d

Assessments

CVSS by origin

7.5
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0
NVDCVSS 2.0 · role Primary · priority eligiblevalid_matchAV:N/AC:L/Au:N/C:P/I:N/A:N
9.8
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8
CISA-ADPCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

9.8Priority eligible

CISA-ADP

CVSS 3.1 · Secondary · Independent enrichment · rank 2

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Validation
Valid match
Recomputed
9.8
Decision reason
Evidence supported
Policy
casca-direct-cvss-eligibility-v1

Assessments are retained side by side under closed precedence. Cascade never averages CVSS.

Evidence boundaries

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; remaining scope stays source-scoped.
  • NVD-carried upstream facts remain derivative; independent corroboration requires a separately authored source.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.
  • OSV aggregation and OSV-converted NVD material are not independent corroboration.
  • Red Hat facts are vendor assertions for the exact supplied products.
  • Nonmembership and not-yet-observed states are not proof of safety.