CASCACascade Atlas

Evidence dossier

CVE-2026-33824

Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability

Exploited in the wild (CISA KEV since Aug 18, 2026). microsoft reports CVSS 3.1 9.8. EPSS estimates 72.7% exploit likelihood as of Aug 26, 2026.

81.6–94.6Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.

State
PUBLISHED
Published
Apr 14, 2026
Updated
Jun 19, 2026
Evidence coverage
85%

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
    microsoft

    Record text: Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability

    Inspect raw assertion
    Field
    container
    Value
    Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability
    Original evidence ↗
  3. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 72.7% probability · 99.4th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.726950000000; percentile 0.994010000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Aug 18, 2026 · first observed Aug 18, 2026

Exploit likelihood72.69%

FIRST EPSS · score date Aug 26, 2026 · 99.4th percentile · first observed Aug 26, 2026

SeverityCVSS 9.8

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 ↗
microsoftOriginal assertion
Record text

Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability

Inspect raw assertion
Field
container
Value
Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

72.7% probability · 99.4th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.726950000000; percentile 0.994010000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
23Underlying assertions
13Canonical products
23Target 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

30 scope groups

microsoft · source assertedMicrosoftWindows 10 Version 1607Direct source scope
Affected: 10.0.14393.0 to before 10.0.14393.9060 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.14393.0", "lessThan": "10.0.14393.9060", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1809Direct source scope
Affected: 10.0.17763.0 to before 10.0.17763.8644 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.17763.0", "lessThan": "10.0.17763.8644", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 21H2Direct source scope
Affected: 10.0.19044.0 to before 10.0.19044.7184 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.19044.0", "lessThan": "10.0.19044.7184", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 22H2Direct source scope
Affected: 10.0.19045.0 to before 10.0.19045.7184 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.19045.0", "lessThan": "10.0.19045.7184", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 11 version 22H3Direct source scope
Affected: 10.0.22631.0 to before 10.0.22631.6936 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.22631.0", "lessThan": "10.0.22631.6936", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 11 Version 23H2Direct source scope
Affected: 10.0.22631.0 to before 10.0.22631.6936 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.22631.0", "lessThan": "10.0.22631.6936", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 11 Version 24H2Direct source scope
Affected: 10.0.26100.0 to before 10.0.26100.8246 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.26100.0", "lessThan": "10.0.26100.8246", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 11 Version 25H2Direct source scope
Affected: 10.0.26200.0 to before 10.0.26200.8246 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.26200.0", "lessThan": "10.0.26200.8246", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 11 version 26H1Direct source scope
Affected: 10.0.28000.0 to before 10.0.28000.1836 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.28000.0", "lessThan": "10.0.28000.1836", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2016Direct source scope
Affected: 10.0.14393.0 to before 10.0.14393.9060 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.14393.0", "lessThan": "10.0.14393.9060", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2016 (Server Core installation)Direct source scope
Affected: 10.0.14393.0 to before 10.0.14393.9060 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.14393.0", "lessThan": "10.0.14393.9060", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2019Direct source scope
Affected: 10.0.17763.0 to before 10.0.17763.8644 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.17763.0", "lessThan": "10.0.17763.8644", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2019 (Server Core installation)Direct source scope
Affected: 10.0.17763.0 to before 10.0.17763.8644 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.17763.0", "lessThan": "10.0.17763.8644", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2022Direct source scope
Affected: 10.0.20348.0 to before 10.0.20348.5020 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.20348.0", "lessThan": "10.0.20348.5020", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)Direct source scope
Affected: 10.0.25398.0 to before 10.0.25398.2274 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.25398.0", "lessThan": "10.0.25398.2274", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2025Direct source scope
Affected: 10.0.26100.0 to before 10.0.26100.32690 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.26100.0", "lessThan": "10.0.26100.32690", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2025 (Server Core installation)Direct source scope
Affected: 10.0.26100.0 to before 10.0.26100.32690 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "10.0.26100.0", "lessThan": "10.0.26100.32690", "versionType": "custom"}]
NVD CPE · OPERATING SYSTEMmicrosoftwindows_10_1607Vulnerable target · 2 assertions
Any version (unconstrained) (< 10.0.14393.9060)Canonical identity product-740fec3e9838b5eabe76ebe27e4d0d7a4cb2e0ef7e13923300d3d0b51e3fce1cLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    through excluding 10.0.14393.9060
    Match ID
    158c16a3-547e-4130-8428-8e429c37e573
  2. cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    through excluding 10.0.14393.9060
    Match ID
    58e1a340-d49a-4ebb-a750-876922acd5ca
NVD CPE · OPERATING SYSTEMmicrosoftwindows_10_1809Vulnerable target · 2 assertions
Any version (unconstrained) (< 10.0.17763.8644)Canonical identity product-a3084138383423221f61594e86f5b295e5e254acd7ae5284f45e0877a084db43Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 3
    Logic
    OR
    Version bounds
    through excluding 10.0.17763.8644
    Match ID
    9b1465b1-bde6-4634-8f12-43f71d68a4d6
  2. cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 2
    Logic
    OR
    Version bounds
    through excluding 10.0.17763.8644
    Match ID
    64248504-2307-45fc-8ff3-7a227cfd8675
NVD CPE · OPERATING SYSTEMmicrosoftwindows_10_21h2Vulnerable target · 3 assertions
Any version (unconstrained) (< 10.0.19044.7184)Canonical identity product-ec10c9f400f23fdf118887f60fe116ffde4adb76dcf118cdd3a7556fd033da3bLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 4
    Logic
    OR
    Version bounds
    through excluding 10.0.19044.7184
    Match ID
    88a175c4-e033-4fe7-b2bf-8bae14321bc4
  2. cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 6
    Logic
    OR
    Version bounds
    through excluding 10.0.19044.7184
    Match ID
    c375372b-d3d4-4b11-aad8-69ac344c24bc
  3. cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 5
    Logic
    OR
    Version bounds
    through excluding 10.0.19044.7184
    Match ID
    86dbf14a-f486-4fe7-9126-d1d54952fc6c
NVD CPE · OPERATING SYSTEMmicrosoftwindows_10_22h2Vulnerable target · 3 assertions
Any version (unconstrained) (< 10.0.19045.7184)Canonical identity product-a6295b9daad3ca57ce70751badba5b7fe99229c8a562cc7400e8cfef3daccaeeLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 8
    Logic
    OR
    Version bounds
    through excluding 10.0.19045.7184
    Match ID
    269b8e88-6473-41dd-ba33-d9184b82ca58
  2. cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 7
    Logic
    OR
    Version bounds
    through excluding 10.0.19045.7184
    Match ID
    8ce2e268-e776-4697-9e43-33aba4cdbe05
  3. cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 9
    Logic
    OR
    Version bounds
    through excluding 10.0.19045.7184
    Match ID
    fcbb431b-ef21-4454-bda3-d8f276be7a64
NVD CPE · OPERATING SYSTEMmicrosoftwindows_11_23h2Vulnerable target · 2 assertions
Any version (unconstrained) (< 10.0.22631.6936)Canonical identity product-026201767813843a6d53867bacde4a55c3035cb868c0a72434012c5e30dab148Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 10
    Logic
    OR
    Version bounds
    through excluding 10.0.22631.6936
    Match ID
    b33ce091-b873-4c30-ba05-54a8c1839212
  2. cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 11
    Logic
    OR
    Version bounds
    through excluding 10.0.22631.6936
    Match ID
    e3af28f3-d486-4b88-9e0e-371241024174
NVD CPE · OPERATING SYSTEMmicrosoftwindows_11_24h2Vulnerable target · 2 assertions
Any version (unconstrained) (< 10.0.26100.8246)Canonical identity product-8665879a2f5fe8b8eab868c43d6ace340b95d1f3879639d97ebdf60ef7b49b5fLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 12
    Logic
    OR
    Version bounds
    through excluding 10.0.26100.8246
    Match ID
    94eb36c7-1ff2-4b44-ad91-f3540f09393e
  2. cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 13
    Logic
    OR
    Version bounds
    through excluding 10.0.26100.8246
    Match ID
    14b23c3f-c8ac-491a-bca5-eb6982c8f9e9
NVD CPE · OPERATING SYSTEMmicrosoftwindows_11_25h2Vulnerable target · 2 assertions
Any version (unconstrained) (< 10.0.26200.8246)Canonical identity product-e9349aae7bae97a590ecc61309b626fd2c236f349da7ff6c765ab3d5cefdfa78Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 15
    Logic
    OR
    Version bounds
    through excluding 10.0.26200.8246
    Match ID
    adc6ce99-ab5d-4dd5-82a9-892366c4b2fd
  2. cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 14
    Logic
    OR
    Version bounds
    through excluding 10.0.26200.8246
    Match ID
    361b5dab-8d1f-45d7-a33c-f49eba56b5f8
NVD CPE · OPERATING SYSTEMmicrosoftwindows_11_26h1Vulnerable target · 2 assertions
Any version (unconstrained) (< 10.0.28000.1836)Canonical identity product-2bea232ffaff2e2d98c0ee9cff13584b133589ad790ac6de44c17e3947efc900Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 17
    Logic
    OR
    Version bounds
    through excluding 10.0.28000.1836
    Match ID
    13a01fa1-08dc-4e33-9ffc-ab4bcd9634ca
  2. cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 16
    Logic
    OR
    Version bounds
    through excluding 10.0.28000.1836
    Match ID
    690e74a8-e72c-47b6-96eb-37c48d69a635

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
17
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
08be796a-8976-421e-93b3-6d5045a6f86119864892-7499-439d-9be3-be7f6578030f1f325afd-f341-4204-ab2a-da10088c067f22a482d3-8e8b-4006-b7b7-dd4d264958823580691e-6c2b-42fc-b98c-49a71300415a38d774ad-bda8-480a-bb5f-f610a6c21b443f2c34ba-c5f1-4416-b08c-ceab418075625721e12c-d048-4ffd-832b-246accb09dc65eb05c53-9896-45a3-a77a-f02118263b2b7a7f7564-2248-4029-b187-f33fbf7022ac9b6f372c-56ba-4fd2-bee6-cd5440bb088aa8d18053-3ee1-4336-b431-d6e3df910255b356f70c-96d0-40a0-95a5-8216cf097a14c3b6e5a9-36a2-447c-b133-a4e03e29bce7cddfc199-3e55-4ad5-9871-66e8a7e03464e5f0ebc3-5083-4be3-9017-b74dbd23a591e7037b6e-89b9-44d6-b175-bd02a95f2be9
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
23
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
0ee19219-d010-4a88-9364-9340052f4b6c0fedbe45-2ee3-4fbf-8f6c-da405c1a04dd14f77b55-336a-463a-9963-380d44e260aa2c232a95-eb31-49fe-b8c3-433cfb37c82e37af3ab7-4661-47ba-bd37-384ff37d02273e3f6b8a-13bf-4562-b472-86b6a295fe5343ee204a-0dbb-48d9-bcd5-9a6c68ac6e8251155e7b-916e-4a67-89c5-c022eda6a4c871015dd7-4225-400d-aa66-f3932d42ab767695f5bf-796d-45e1-83f4-4417d7a52e1479c16e64-4430-4692-a338-02a3c1945083b2e1b821-b5d0-4f27-9eec-2ab5d4150bd5b43bafa1-3921-46e5-87fc-c54918aaa1d0b838e6ab-7518-4142-a7aa-ca5477e74431c8f30835-7dec-4628-adf1-2f0b2c5e2000cad58cdc-251f-48d8-9089-06e1949a8430cc9fad60-bdd9-4cb0-a009-129b4ce70192d3621890-44cb-4476-a21b-defbd1d4bfc8d607e53a-d1bd-435f-a276-291da41c57d3e0b6f4ef-5efc-4226-8704-0c23db396d3fe3e2b7af-66bf-4b6a-b33e-5258b6e8f326f21d0f61-4d59-405e-8721-d48de68f679df97baae4-8e30-4821-8936-affde8166d36

Assessments

CVSS by origin

9.8
secure@microsoft.comCVSS 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
microsoftCVSS 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/E:U/RL:O/RC:C

Direct CVE/CNA normalized decisions

9.8Priority eligible

microsoft

CVSS 3.1 · Primary · Original assertion · rank 1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
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.