CASCACascade Atlas

Evidence dossier

CVE-2020-1464

Windows Spoofing Vulnerability

Exploited in the wild (CISA KEV since Nov 3, 2021). microsoft reports CVSS 3.1 7.8. Severity assessments differ within at least one CVSS version. EPSS estimates 41.1% exploit likelihood as of Aug 27, 2026.

74.1–85.8Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

A spoofing vulnerability exists when Windows incorrectly validates file signatures. An attacker who successfully exploited this vulnerability could bypass security features and load improperly signed files. In an attack scenario, an attacker could bypass security features intended to prevent improperly signed files from being loaded. The update addresses the vulnerability by correcting how Windows validates file signatures.

State
PUBLISHED
Published
Aug 17, 2020
Updated
Oct 21, 2025
Evidence coverage
78%

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 Spoofing Vulnerability

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

    Exploitation cataloged: Microsoft Windows Spoofing Vulnerability

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

    EPSS score: 41.13% probability · 98.56th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.411310000000; percentile 0.985590000000
    Original evidence ↗

Assessments differ

NVD2.1CVSS 2.0 · source date omitted
NVD5.5CVSS 3.1 · source date omitted
secure@microsoft.com7.8CVSS 3.1 · source date omitted

Values are shown separately by source and CVSS version.

ExploitationCatalog member

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

Exploit likelihood41.13%

FIRST EPSS · score date Aug 27, 2026 · 98.6th percentile · first observed Aug 27, 2026

SeverityAssessments differ

microsoft · CVSS 3.1 · first observed Jul 19, 2026 · values shown separately below

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 assessmentAssessments differ

Eligible assertions materially conflict and remain visible side by side.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Aug 27, 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
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 Spoofing Vulnerability

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

Microsoft Windows Spoofing Vulnerability

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

41.13% probability · 98.56th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.411310000000; percentile 0.985590000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
20Underlying assertions
18Canonical products
20Target 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

48 scope groups

microsoft · source assertedMicrosoftWindows 10 Version 1507Direct source scope
Affected: 10.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1607Direct source scope
Affected: 10.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1709Direct source scope
Affected: 10.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1709 for 32-bit SystemsDirect source scope
Affected: 10.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1803Direct source scope
Affected: 10.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1809Direct source scope
Affected: 10.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1903 for 32-bit SystemsDirect source scope
Affected: 10.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1903 for ARM64-based SystemsDirect source scope
Affected: 10.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1903 for x64-based SystemsDirect source scope
Affected: 10.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1909Direct source scope
Affected: 10.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 2004Direct source scope
Affected: 10.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 7Direct source scope
Affected: 6.1.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 7 Service Pack 1Direct source scope
Affected: 6.1.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 8.1Direct source scope
Affected: 6.3.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2008 R2 Service Pack 1Direct source scope
Affected: 6.1.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)Direct source scope
Affected: 6.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2008 Service Pack 2Direct source scope
Affected: 6.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2008 Service Pack 2Direct source scope
Affected: 6.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)Direct source scope
Affected: 6.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2012Direct source scope
Affected: 6.2.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2012 R2Direct source scope
Affected: 6.3.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2012 R2 (Server Core installation)Direct source scope
Affected: 6.3.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2012 (Server Core installation)Direct source scope
Affected: 6.2.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2016Direct source scope
Affected: 10.0.0 to before publication (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": "publication", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2016 (Server Core installation)Direct source scope
Affected: 10.0.0 to before publication (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": "publication", "versionType": "custom"}]

Affected-product evidence

Accepted scope and product mapping

18 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
164fa2fc-d6c9-4d77-ab73-1816805b1bba
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
149fb302-d78a-4bf9-8e9a-d3c7a9f3eef3
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-11ee14cb5467893e953fd2afd492aa2a80b330b2831c4c10e31a6d9476b8f7ab

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
92e43784-385c-4b1f-bad0-c2244d9a6add
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-14b069f5c38c7de633daa144529d27da601f26ac1be85dea8792e6a0093a122b

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
c61059be-3533-450b-818c-d351daaca8ee
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
e004d790-c66d-4ccf-b5d5-dc5948901202f8fc531c-ac51-4fd3-9e5c-3531c09283c4
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
e141b3f8-e784-4ff4-bab7-76e906469674
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
bbfb9b3b-6551-49ae-9ed8-ef5e2152b229
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
5c7f01d7-51cc-456c-913a-24f7d9a2ba55a877c24d-48cf-4845-84e4-306dbf3a1c46
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-5e821ea3746af154a469c180e78b9f4d663edf21461517987eed76740c7910c1

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
1ac30932-36f2-49cc-a168-74e6a9f055e0
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
2a2e2cfd-0008-4dfa-96ae-874f96e11b99
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
da3b25d7-e120-4666-8629-20349a4be915
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
7c9bcf7b-b784-44db-b9ad-aeb179725dde
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-9868fa1c12254f9aff51c0302ecb2ea1ab1d9ca0547bde09677154b24f8c7c61

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
9cf7c96d-7138-4edf-8d53-53cc27620f86
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
eb13e5ff-a2a6-4749-9fbf-2e0f20046a86
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
71f0cfdd-4e9c-41d3-a7c4-d871fa490eb3
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-d059dbfcd39652adfca6d48669484008cb5d4a8b33116c81ee002cd9101904af

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
b9104a82-f717-4812-a0c4-a2bb74a87eb9
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
c81f8123-9b1e-47a8-92c1-b89b61c6650f
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
cf11253b-a81f-47ae-b21b-a521d7d14bf9
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
30
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
0dcb7096-709f-4a7f-b5d2-8c3f0eb06ba111e19adf-b232-4940-9e83-2241353a6b4e15b93f8f-7561-4398-8930-e597627c31811d67badc-14ae-498b-8413-0e6a3ab9761423f41bd2-e7e7-44fd-8bce-a2c86826d38626b39a1e-e99d-4c22-bcb7-d7f5e6eab8392ab3e838-7945-4017-9983-3b5682adaa3c37bad99d-c6d7-438e-bcdc-587914c4a61c4522c8c5-4b1e-443c-a7d9-a69dbcec2d7c4a6c59b0-f96d-4094-81c7-4ccad1f5a71e55c61a22-9a46-496c-a5b8-72ef91e2a440612c4eab-a40c-4c80-b29f-b4b2fb2e7bed796edd25-75c0-48a5-83bc-02691a080fa57f4c0b8b-35dc-4515-a27f-4a0720c3072184187a57-28af-4b75-b268-352efc1e22ce8463fb26-58ba-4591-90f8-57db89f6a9088ca58a3b-35f4-4cb9-abcf-e20210e0b90490d357cb-462f-40f5-840b-59e0ad29f5cd94075213-e237-415f-b866-0c09ca459f8495e78858-f793-4c95-b1ef-405756b841559bbe1cee-802f-46a1-9837-66af66542cdea3ead031-99f4-4efc-a3a1-1bbc186174f7ab7e9be8-a5fa-413d-bfe4-5bbac8e3ee4ab2780fa5-08f3-4dfb-b9db-99629155ddc7b432eb3d-00ba-4214-97aa-ac4ba1fd44d6b774f1bc-60ae-4c24-8534-8320a204403eb90fc865-670a-4750-9b3a-ec9d1c878318d4e42324-28c8-4940-b5bd-6ccbe5cf8280e737439a-4561-4341-88f3-2ce0840a2d29f645ac9f-ffbf-4dd8-b723-b1c0648b28db

Assessments

CVSS by origin

2.1
NVDCVSS 2.0 · role Primary · priority eligiblevalid_matchAV:L/AC:L/Au:N/C:N/I:P/A:N
5.5
NVDCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
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:P/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:P/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.