CASCACascade Atlas

Evidence dossier

CVE-2026-21513

MSHTML Framework Security Feature Bypass Vulnerability

Exploited in the wild (CISA KEV since Feb 10, 2026). microsoft reports CVSS 3.1 8.8. EPSS estimates 15.9% exploit likelihood as of Oct 22, 2026.

76.8–82.7Priority evidence range
Evidence through Oct 22, 2026, 6:07 PM UTC

As of Oct 22, 2026

Normalized restatement

Protection mechanism failure in MSHTML Framework allows an unauthorized attacker to bypass a security feature over a network.

State
PUBLISHED
Published
Feb 10, 2026
Updated
Aug 19, 2026
Evidence coverage
92%

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: MSHTML Framework Security Feature Bypass Vulnerability

    Inspect raw assertion
    Field
    container
    Value
    MSHTML Framework Security Feature Bypass Vulnerability
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Microsoft MSHTML Framework Protection Mechanism Failure Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Microsoft MSHTML Framework Protection Mechanism Failure Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 15.85% probability · 96.88th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.158520000000; percentile 0.968770000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Feb 10, 2026 · first observed Sep 1, 2026

Exploit likelihood15.85%

FIRST EPSS · score date Oct 22, 2026 · 96.9th percentile · first observed Oct 22, 2026

SeverityCVSS 8.8

microsoft · CVSS 3.1 · first observed Aug 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 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 assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Oct 22, 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
Oct 22, 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

MSHTML Framework Security Feature Bypass Vulnerability

Inspect raw assertion
Field
container
Value
MSHTML Framework Security Feature Bypass Vulnerability
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Microsoft MSHTML Framework Protection Mechanism Failure Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Microsoft MSHTML Framework Protection Mechanism Failure Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

15.85% probability · 96.88th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.158520000000; percentile 0.968770000000
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

35 scope groups

microsoft · source assertedMicrosoftWindows 10 Version 1607Direct source scope
Affected: 10.0.14393.0 to before 10.0.14393.8868 (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": "10.0.14393.8868", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 1809Direct source scope
Affected: 10.0.17763.0 to before 10.0.17763.8389 (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": "10.0.17763.8389", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 21H2Direct source scope
Affected: 10.0.19044.0 to before 10.0.19044.6937 (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": "10.0.19044.6937", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 10 Version 22H2Direct source scope
Affected: 10.0.19045.0 to before 10.0.19045.6937 (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": "10.0.19045.6937", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 11 version 22H3Direct source scope
Affected: 10.0.22631.0 to before 10.0.22631.6649 (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": "10.0.22631.6649", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 11 Version 23H2Direct source scope
Affected: 10.0.22631.0 to before 10.0.22631.6649 (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": "10.0.22631.6649", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 11 Version 24H2Direct source scope
Affected: 10.0.26100.0 to before 10.0.26100.7840 (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": "10.0.26100.7840", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 11 Version 25H2Direct source scope
Affected: 10.0.26200.0 to before 10.0.26200.7840 (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": "10.0.26200.7840", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 11 version 26H1Direct source scope
Affected: 10.0.28000.0 to before 10.0.28000.1575 (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": "10.0.28000.1575", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows 11 Version 26H1Direct source scope
Affected: 10.0.28000.0 to before 10.0.28000.1575 (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": "10.0.28000.1575", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2012Direct source scope
Affected: 6.2.9200.0 to before 6.2.9200.25923 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.2.9200.0", "lessThan": "6.2.9200.25923", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2012 R2Direct source scope
Affected: 6.3.9600.0 to before 6.3.9600.23022 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.3.9600.0", "lessThan": "6.3.9600.23022", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2012 R2 (Server Core installation)Direct source scope
Affected: 6.3.9600.0 to before 6.3.9600.23022 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.3.9600.0", "lessThan": "6.3.9600.23022", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2012 (Server Core installation)Direct source scope
Affected: 6.2.9200.0 to before 6.2.9200.25923 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "6.2.9200.0", "lessThan": "6.2.9200.25923", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2016Direct source scope
Affected: 10.0.14393.0 to before 10.0.14393.8868 (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": "10.0.14393.8868", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2016 (Server Core installation)Direct source scope
Affected: 10.0.14393.0 to before 10.0.14393.8868 (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": "10.0.14393.8868", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2019Direct source scope
Affected: 10.0.17763.0 to before 10.0.17763.8389 (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": "10.0.17763.8389", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2019 (Server Core installation)Direct source scope
Affected: 10.0.17763.0 to before 10.0.17763.8389 (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": "10.0.17763.8389", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2022Direct source scope
Affected: 10.0.20348.0 to before 10.0.20348.4773 (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": "10.0.20348.4773", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)Direct source scope
Affected: 10.0.25398.0 to before 10.0.25398.2149 (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": "10.0.25398.2149", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2025Direct source scope
Affected: 10.0.26100.0 to before 10.0.26100.32370 (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": "10.0.26100.32370", "versionType": "custom"}]
microsoft · source assertedMicrosoftWindows Server 2025 (Server Core installation)Direct source scope
Affected: 10.0.26100.0 to before 10.0.26100.32370 (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": "10.0.26100.32370", "versionType": "custom"}]
NVD CPE · OPERATING SYSTEMmicrosoftwindows_10_1607Vulnerable target · 2 assertions
Any version (unconstrained) (< 10.0.14393.8868)Canonical identity product-740fec3e9838b5eabe76ebe27e4d0d7a4cb2e0ef7e13923300d3d0b51e3fce1cLinked exact
Scope supported
Inspect raw assertions
  1. 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 10.0.14393.8868
    Match ID
    b941280b-97f6-4f60-80a3-40482a74488d
  2. 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 10.0.14393.8868
    Match ID
    e78a20fd-b910-43df-be89-e971e2fd0049
NVD CPE · OPERATING SYSTEMmicrosoftwindows_10_1809Vulnerable target · 2 assertions
Any version (unconstrained) (< 10.0.17763.8389)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 10.0.17763.8389
    Match ID
    369b4e41-3895-4cb7-bd37-d2e4a4d52fb9
  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 10.0.17763.8389
    Match ID
    c09c54da-6ab0-4696-a2f2-c11cfc292ea9
NVD CPE · OPERATING SYSTEMmicrosoftwindows_10_21h2Vulnerable target · 3 assertions
Any version (unconstrained) (< 10.0.19044.6937)Canonical identity product-ec10c9f400f23fdf118887f60fe116ffde4adb76dcf118cdd3a7556fd033da3bLinked exact
Scope supported
Inspect raw assertions
  1. 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 10.0.19044.6937
    Match ID
    893dba65-116b-4ae0-80e1-50458cb5fdad
  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 10.0.19044.6937
    Match ID
    37e2bff1-28c0-4fa0-9a6c-020146e4ad54
  3. 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 10.0.19044.6937
    Match ID
    edb3fd9a-2786-4ec1-8989-2b0d054e0307

Affected-product evidence

Accepted scope and product mapping

13 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-026201767813843a6d53867bacde4a55c3035cb868c0a72434012c5e30dab148

Source class
Nvd cpe vulnerable target
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
07c05cbc-d071-4945-895f-852ae012f8d673adf85d-3ee7-4b3e-9f43-c5296b480e9c
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-02e254d111ce604757a15650ef469f4f8365d6247da82ce3ac2695c3cfc7dc5f

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
b351fa0b-6f44-4c4e-aeec-dedb763288ef
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-25a2932c0bbcb648f7e391c8b9d34c734e5085444c03c1c206b9d4c4baa80b25

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
0c05a2f4-3576-495f-8444-5f5302ecb55f
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-3fe7da0d567cbba9da3f09deea827ccacd90ac3643fc3e1622f75fb001f24443

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
6476b8ad-569d-406c-8fec-378ddf88a054
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-5a80416e92fed0cddbb3d4f3840218b448dee11159824ad25a0353da566963fe

Source class
Nvd cpe vulnerable target
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
6f8b56e1-0717-44f6-9b27-3e91256933a470c395e3-646b-4238-b599-d3a0413ca275
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-740fec3e9838b5eabe76ebe27e4d0d7a4cb2e0ef7e13923300d3d0b51e3fce1c

Source class
Nvd cpe vulnerable target
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
167bc8ca-e44f-487b-9c2a-319c14b9ecf63741c2cc-67ef-475c-bc3d-02923f0af215
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-8665879a2f5fe8b8eab868c43d6ace340b95d1f3879639d97ebdf60ef7b49b5f

Source class
Nvd cpe vulnerable target
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
62b96c6b-122f-4ca4-9050-dd3e44d0071d8b9f08d6-add1-4e89-9a39-7f304f517767
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-a3084138383423221f61594e86f5b295e5e254acd7ae5284f45e0877a084db43

Source class
Nvd cpe vulnerable target
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
81107b0e-a5d4-4ddf-a6aa-fbeeeed339fdb89f7404-d461-42e0-8e5f-2741f1fb290f
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-a6295b9daad3ca57ce70751badba5b7fe99229c8a562cc7400e8cfef3daccaee

Source class
Nvd cpe vulnerable target
Assertions
3
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
1947df54-7a6f-4f50-a7e5-2a57176b51204ad7e7c4-9f82-4cff-a0e2-7feb6d36523369c7c9c3-c44f-4bb2-ac04-d52c28a504d8
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-bc66b50eed682b3633d0f3a2914725d0a72d6d0d5fece14f566d91bc87448c0b

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
1f2d61bb-fcaf-433a-92ae-a51f6fb371e4
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-d196d31962e613955a91e33e795c22dcfa7bf25173abebaca616a6350cce9ce1

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
a7bec7b7-d8b9-4a5a-a534-aa032621144f
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-e9349aae7bae97a590ecc61309b626fd2c236f349da7ff6c765ab3d5cefdfa78

Source class
Nvd cpe vulnerable target
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
17981eb9-0ea2-4182-ab41-0bb49f2326fe32632b40-9f3b-454f-98f2-6006951b43c9
Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-ec10c9f400f23fdf118887f60fe116ffde4adb76dcf118cdd3a7556fd033da3b

Source class
Nvd cpe vulnerable target
Assertions
3
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
78d46809-bb78-4dc0-9506-a0e144464ce79ab71778-00f8-42fe-89b7-9311c7dae1ceb2afbe84-1c64-4f35-b5e8-62c6f44870c4
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
22
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
009f989f-7c5a-4f21-b089-fb97e406236a1468839f-62d0-4bcc-a5d8-ecdcc9a11b8b155fec78-3583-4901-8d89-e3a049011fc717d6597f-412e-4d2e-a975-95faabac37b92064ad0d-a64b-4ffc-b512-c2dd5c76590220c75465-8d29-4235-9f92-78c36a5eff7f269ef3fe-694c-444e-8fe5-c0fc3e2412c12ed86247-e1b2-41b1-8530-285a23a8babe39974101-9d78-46d3-be4d-547d403bf74749a4d5ab-2c10-4ec4-8475-62ab1100743a56d82078-4f94-4422-a9aa-92b59be5f3bc590c89af-5767-410d-86b2-ad035e8792387ac5e884-04f3-4125-a173-1348af98224a7be7b996-7dfa-424b-80a5-8c0bc7e2a08480293166-7f85-4b60-bafc-b477b300b112a17abf20-385b-47ec-9d80-645dbb6f2475b251516c-604d-4446-bae6-4084becad719b4314d53-4b95-4da6-acba-222e3670b612d1a4bf44-ba3c-4f17-a127-db0696864fc3e2f239be-f167-48f8-8f6b-12bd7695c1f0fad368ea-9259-4afb-88bf-c04035184ec1fc629832-63cf-4e73-9d24-ae215b05885b

Assessments

CVSS by origin

8.8
secure@microsoft.comCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8
microsoftCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Direct CVE/CNA normalized decisions

8.8Priority eligible

microsoft

CVSS 3.1 · Primary · Original assertion · rank 1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Validation
Valid match
Recomputed
8.8
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.