CASCACascade Atlas

Evidence dossier

CVE-2021-31956

Windows NTFS Elevation of Privilege Vulnerability

Exploited in the wild (CISA KEV since Nov 3, 2021). microsoft reports CVSS 3.1 7.8. EPSS estimates 20.3% exploit likelihood as of Aug 27, 2026.

75.8–81.6Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

Windows NTFS Elevation of Privilege Vulnerability

State
PUBLISHED
Published
Jun 8, 2021
Updated
Jan 12, 2026
Evidence coverage
91%

Evidence chronology

What was known when

Download this view's receipt →
  1. 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 ↗
  2. 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 ↗
  3. Source dateSource date omittedFirst observed by CASCA
    microsoft

    Record text: Windows NTFS Elevation of Privilege Vulnerability

    Inspect raw assertion
    Field
    container
    Value
    Windows NTFS Elevation of Privilege Vulnerability
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Microsoft Windows NTFS Privilege Escalation Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Microsoft Windows NTFS Privilege Escalation Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 20.27% probability · 97.28th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.202680000000; percentile 0.972800000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Nov 3, 2021 · first observed Jul 19, 2026

Exploit likelihood20.27%

FIRST EPSS · score date Aug 27, 2026 · 97.3th percentile · first observed Aug 27, 2026

SeverityCVSS 7.8

microsoft · CVSS 3.1 · first observed Jul 19, 2026 · same-version scores align in this snapshot

Evidence detail

Source limits and decisions

Why each evidence state has this value

casca-unknown-reasons-v1
Exploitation statusEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Severity assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Aug 27, 2026
Resolution
None
Affected productsSource-reported scope

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

Revision
casca-factor-d-obligations-v1
Cutoff
Aug 27, 2026
Resolution
Resolve identity

Source comparison

Who said what

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 ↗
microsoftOriginal assertion
Record text

Windows NTFS Elevation of Privilege Vulnerability

Inspect raw assertion
Field
container
Value
Windows NTFS Elevation of Privilege Vulnerability
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Microsoft Windows NTFS Privilege Escalation Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Microsoft Windows NTFS Privilege Escalation Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

20.27% probability · 97.28th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.202680000000; percentile 0.972800000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
18Underlying assertions
16Canonical products
18Target 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

41 scope groups

microsoft · source assertedMicrosoftWindows 10 Version 1507Direct source scope
Affected: 10.0.0 to before 10.0.10240.18967 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.0", "lessThan": "10.0.10240.18967", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1607Direct source scope
Affected: 10.0.0 to before 10.0.14393.4467 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.0", "lessThan": "10.0.14393.4467", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1809Direct source scope
Affected: 10.0.0 to before 10.0.17763.1999 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.0", "lessThan": "10.0.17763.1999", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1909Direct source scope
Affected: 10.0.0 to before 10.0.18363.1621 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.0", "lessThan": "10.0.18363.1621", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 2004Direct source scope
Affected: 10.0.0 to before 10.0.19041.1052 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.0", "lessThan": "10.0.19041.1052", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 20H2Direct source scope
Affected: 10.0.0 to before 10.0.19042.1052 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.0", "lessThan": "10.0.19042.1052", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 21H1Direct source scope
Affected: 10.0.0 to before 10.0.19043.1052 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.0", "lessThan": "10.0.19043.1052", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 7Direct source scope
Affected: 6.1.0 to before 6.1.7601.25632 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.1.0", "lessThan": "6.1.7601.25632", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 7 Service Pack 1Direct source scope
Affected: 6.1.0 to before 6.1.7601.25632 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.1.0", "lessThan": "6.1.7601.25632", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 8.1Direct source scope
Affected: 6.3.0 to before 6.3.9600.20045 (custom comparison)Affected: 6.3.0 to before 6.3.9600.20044 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.3.0", "lessThan": "6.3.9600.20045", "versionType": "custom"}, {"status": "affected", "version": "6.3.0", "lessThan": "6.3.9600.20044", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2008 R2 Service Pack 1Direct source scope
Affected: 6.1.0 to before 6.1.7601.25632 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.1.0", "lessThan": "6.1.7601.25632", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)Direct source scope
Affected: 6.0.0 to before 6.1.7601.25632 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.0.0", "lessThan": "6.1.7601.25632", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2008 Service Pack 2Direct source scope
Affected: 6.0.0 to before 6.0.6003.21137 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.0.0", "lessThan": "6.0.6003.21137", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2008 Service Pack 2Direct source scope
Affected: 6.0.0 to before 6.0.6003.21137 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.0.0", "lessThan": "6.0.6003.21137", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)Direct source scope
Affected: 6.0.0 to before 6.0.6003.21137 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.0.0", "lessThan": "6.0.6003.21137", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2012Direct source scope
Affected: 6.2.0 to before 6.2.9200.23372 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.2.0", "lessThan": "6.2.9200.23372", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2012 R2Direct source scope
Affected: 6.3.0 to before 6.3.9600.20045 (custom comparison)Affected: 6.3.0 to before 6.3.9600.20044 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.3.0", "lessThan": "6.3.9600.20045", "versionType": "custom"}, {"status": "affected", "version": "6.3.0", "lessThan": "6.3.9600.20044", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2012 R2 (Server Core installation)Direct source scope
Affected: 6.3.0 to before 6.3.9600.20045 (custom comparison)Affected: 6.3.0 to before 6.3.9600.20044 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.3.0", "lessThan": "6.3.9600.20045", "versionType": "custom"}, {"status": "affected", "version": "6.3.0", "lessThan": "6.3.9600.20044", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2012 (Server Core installation)Direct source scope
Affected: 6.2.0 to before 6.2.9200.23372 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.2.0", "lessThan": "6.2.9200.23372", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2016Direct source scope
Affected: 10.0.0 to before 10.0.14393.4467 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.0", "lessThan": "10.0.14393.4467", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2016 (Server Core installation)Direct source scope
Affected: 10.0.0 to before 10.0.14393.4467 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.0", "lessThan": "10.0.14393.4467", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2019Direct source scope
Affected: 10.0.0 to before 10.0.17763.1999 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.0", "lessThan": "10.0.17763.1999", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2019 (Server Core installation)Direct source scope
Affected: 10.0.0 to before 10.0.17763.1999 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.0", "lessThan": "10.0.17763.1999", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server version 2004Direct source scope
Affected: 10.0.0 to before 10.0.19041.1052 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.0", "lessThan": "10.0.19041.1052", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server version 20H2Direct source scope
Affected: 10.0.0 to before 10.0.19042.1052 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.0", "lessThan": "10.0.19042.1052", "versionType": "custom"}]

Affected-product evidence

Accepted scope and product mapping

16 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-02e254d111ce604757a15650ef469f4f8365d6247da82ce3ac2695c3cfc7dc5f

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
eb64010c-95d7-4fc1-9f84-0297a6700fe8
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-076c7e47c78d9425d54dea0b063ed7cd79e5f9f0bfdb3c9153b8aec4e71a7ad9

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
031e66f5-015a-4cc2-8630-e83246ad863c
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-217b1ab3d25f361a639824f86753d418b35aa2a816ee370bb71b5d1dd883d87a

Source class
Nvd cpe vulnerable target
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
1b0e08e3-a76b-4e85-a977-cb7b169beb51d5a14425-4faa-4944-ac22-20e426d8c953
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-25a2932c0bbcb648f7e391c8b9d34c734e5085444c03c1c206b9d4c4baa80b25

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
11e635ea-6fc6-4179-94d5-ec003da1df81
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-457c0c3b89fb1cf896e8491223eac8b0cb1ea61ce3174f915e4fe1032759d5a2

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
3f419e90-dafe-478d-b062-9312534f7897
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-55e90faed8848f3d316cf702d119e83086b6dc5a963d9947a7df1c589f50346d

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
9c74104b-2033-4f4c-963f-add1be418a9e
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-571f6df0fa50d71be9551414060ed8bfcdb500437871cf9595b7fa6b034cecbd

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
fc925116-226a-4abd-bd69-152e2b2ef4d1
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-5a80416e92fed0cddbb3d4f3840218b448dee11159824ad25a0353da566963fe

Source class
Nvd cpe vulnerable target
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
27e176d6-4a3e-4e91-9446-2ce3f8903a835d8d2d5d-5e15-4985-aa58-64b7a87871ee
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-740fec3e9838b5eabe76ebe27e4d0d7a4cb2e0ef7e13923300d3d0b51e3fce1c

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
bb05a4b5-0d02-4f95-9545-7cafe233440e
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-7e46de82012029583622f69d79b86bc210b5bd25b8cb3bb4468936702b23c4b0

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
478d4376-0ed9-46d6-807e-9b6257684da1
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-9851bd571b8ab08bca589cd73710badfef557d036f0fb7707f694f1c9f597cb4

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
026a185e-5193-4de3-9b8f-3a39f590f688
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-9b245936275be71b526838fc72ea633d195b35bdd9dfc31bb6df51e7700edecc

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
6210f83d-2b18-4790-aa36-1060b8e57c65
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-a3084138383423221f61594e86f5b295e5e254acd7ae5284f45e0877a084db43

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
6dc42b46-e332-4bab-85bb-58c6501eb3ea
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-e0c6c3f5c5e95b5b83fbbf719a7de2471749e1ca250bebf19bc7898a937a00ed

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
8361292f-cb4d-4445-8bdb-a7678aca4b66
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-ef5324dcc791e4e872d6c2be0aefa1d7687ca82c3b4ac5d1f72c76cce8395218

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
fada58be-477d-4a60-9b2e-e404485b32ae
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-f20a05098a41a238f96b56b817d0482887bb39ad40620198bbe05da10ee02ffc

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
bec80cc4-77ea-42d4-b3d2-80b9a06a9ea4
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
25
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
18d30b57-ed72-42eb-b4d5-5866526bd2c01f48e425-4d80-4918-a30a-4cfa94bc6db01fae06cb-efcb-4b1f-a909-91509506115327c43027-c6fe-4cda-86b2-6d7e428dddef2c6fe02a-c8b7-4328-acf5-9e4295b339552e194640-f47e-4c6f-aeba-3722903d84ab34c212f7-20f1-4de6-84dc-0dc493e7b0ef3b1e0d49-82a4-4241-8555-c22b9175fed540f0a60e-f1ac-4dc7-bab1-478b07234fbb423d9288-4b5a-407f-885d-7f7a5fb54d3053e12daa-95cf-428f-b922-1b6806954b9759883fa9-2716-4eb4-94d7-041ca59fc5235fcc3acf-41db-47a2-ae89-5712a6f332f273d7b368-20d3-4053-b983-1a91c881a0db76c708ad-66c9-4264-a59d-8d19e62140b977aadfbf-5a55-4b55-8304-a4f2322c4e28806b77ee-2ad6-42a9-a3c2-40eacec0861b8e456be7-8c08-448a-9a4a-2500f413a52791f568e3-4f19-4631-bb69-690d02ba4cb09c8a485e-f367-481b-b53c-2a0937d1083aa2166587-7d93-49c6-bfc3-dc4527617fbeb5410028-0c24-47a5-b3ab-feb97fa35bc6c56e58f8-70ce-439f-86ae-eb6724d32f3dee888161-41cb-4e2a-ac6f-96d2b0182a99f459e4aa-0d5a-4fba-8534-e6003844715e

Assessments

CVSS by origin

9.3
NVDCVSS 2.0 · role Primary · priority eligiblevalid_matchAV:N/AC:M/Au:N/C:C/I:C/A:C
7.8
NVDCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8
secure@microsoft.comCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8
microsoftCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

Direct CVE/CNA normalized decisions

7.8Priority eligible

microsoft

CVSS 3.1 · Primary · Original assertion · rank 1

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
Validation
Valid match
Recomputed
7.8
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.