vciy

CVE-2024-38217

INDEX BUILT · 2026-09-20

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Windows Mark of the Web Security Feature Bypass Vulnerability

CVE-2024-382174 of 4 sources documented this
70

rank 70 = 40 + 14 + 1 + 9 + 6

rank@v1 · act now

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.10026 · CISA KEV listed  ·  without this subject the record ranks 30

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 5.4, from the CNA  ·  without this subject the record ranks 56

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2025-10-19  ·  without this subject the record ranks 69

How much of the world it touches

NVD CPE configurations

15 products in the CPE ranges  ·  without this subject the record ranks 61

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 64

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$214,000over the next 30 days, if this record is yours
Movement+$4,080on 2026-08-19, the last material move, 16 days before this reading
Basisassumeda published average, not your estate

$214,000 = $4.99M incident cost x 0.42806422275080447 exposure x 0.10026 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.10026EPSSKEV · LISTED
Severity5.4 MEDIUMreceipt
Harmpartial impactreceipt
Exploitationin the wild · KEVreceipt
Defensefix version namedreceipt
Movementthreshold crossedreceipt
PLATEAU10Minimal movement since 2025-11-21, 287 days at 0.10, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

Microsoft WindowsMicrosoft Windows38217

This record is one instance of CWE-693, protection mechanism failure. The index holds 839 prior instances of this class, 13 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

Full pattern panel

Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signalspoke length is how much of the record matches, not how bad it is

Running Microsoft Windows 10 Version 1507? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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Harm, if it fires from the vector and the weakness

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Reachnetwork-reachable · no privileges required · user interaction required · low attack complexityreceipt
ImpactPartial integrity and availability lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-693 Protection Mechanism Failurereceipt
Published consequencesCWE-693: Access Control: Bypass Protection Mechanism[email protected]
Ransomware campaign useUnknown to CISAreceipt

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

Fixed in10.0.10240.20766; 10.0.14393.7336; 10.0.17763.6293; 10.0.19044.4894; 10.0.19045.4894; 10.0.22000.3197; 10.0.22621.4169; 10.0.22631.4169; 10.0.26100.1742…receipt
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.
CISA remediation statusoverdue since 2024-10-01receipt
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.receipt
Published to CISA KEVsame dayderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2024-09-10.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed2024-09-10receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA5.4 MEDIUMreceipt
Exploit probability0.10026 · top 5% of all CVEsreceipt
Blast breadth2 products across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes51 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Windows 10 Version 1507; Microsoft Windows 10 Version 1607; Microsoft Windows 10 Version 1809; Microsoft Windows 10 Version 21H2; Microsoft Windows 10 Version 22H2…receipt
Published rangesmicrosoft windows 10 1507 < 10.0.10240.20766; microsoft windows 10 1607 < 10.0.14393.7336; microsoft windows 10 1809 < 10.0.17763.6293; microsoft windows 10 21h2 < 10.0.19044.4894receipt
Show all 15 published ranges
microsoft windows 10 1507 < 10.0.10240.20766
microsoft windows 10 1607 < 10.0.14393.7336
microsoft windows 10 1809 < 10.0.17763.6293
microsoft windows 10 21h2 < 10.0.19044.4894
microsoft windows 10 22h2 < 10.0.19045.4894
microsoft windows 11 21h2 < 10.0.22000.3197
microsoft windows 11 22h2 < 10.0.22621.4169
microsoft windows 11 23h2 < 10.0.22631.4169
microsoft windows 11 24h2 < 10.0.26100.1742
microsoft windows server 2008 r2
microsoft windows server 2012 r2
microsoft windows server 2016 < 10.0.14393.7336
microsoft windows server 2019 < 10.0.17763.6293
microsoft windows server 2022 < 10.0.20348.2700
microsoft windows server 2022 23h2 < 10.0.25398.1128
Fixed in10.0.10240.20766; 10.0.14393.7336; 10.0.17763.6293; 10.0.19044.4894; 10.0.19045.4894; 10.0.22000.3197; 10.0.22621.4169; 10.0.22631.4169; 10.0.26100.1742…receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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What it is stated by the CNA

Windows Mark of the Web Security Feature Bypass Vulnerability receipt

NVD's analysis a second authority

weakness
CWE-693
affected versions
microsoft windows 10 1507 < 10.0.10240.20766; microsoft windows 10 1607 < 10.0.14393.7336; microsoft windows 10 1809 < 10.0.17763.6293; and 12 more, listed in full below
also scored by
[email protected] 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

check it yourself msrc.microsoft.com receipt

Dated events

2024-09-10Added to CISA KEV2024-10-01CISA remediation due2025-03-17EPSS moved 0.03 to 0.592026-08-19EPSS moved 0.10 to 0.10

Movement the material steps

11 Sep 20240.00382
17 Mar 20250.59225 · crossed 0.10 and 0.50 · scoring model v2025.03.14
15 Apr 20250.15952 · crossed 0.50
18 Nov 20250.32174
21 Nov 20250.12678
15 Jun 20260.097 · crossed 0.10 · scoring model v2026.06.15
19 Aug 20260.10026 · crossed 0.10

This score more than doubled inside 72 hours. Both observations are in the full history below.

Show all 40 observations
11 Sep 20240.00382
12 Sep 20240.00268
12 Nov 20240.00217
23 Nov 20240.00226
13 Dec 20240.00258
17 Dec 20240.00560
28 Jan 20250.02608
17 Mar 20250.59225
19 Mar 20250.67688
20 Mar 20250.59225
27 Mar 20250.67688
28 Mar 20250.59225
29 Mar 20250.67688
30 Mar 20250.59225
15 Apr 20250.15952
6 Jun 20250.14086
27 Jun 20250.13392
29 Jun 20250.14086
27 Aug 20250.13392
14 Sep 20250.11696
26 Sep 20250.12318
1 Oct 20250.11696
17 Oct 20250.10523
19 Oct 20250.19978
22 Oct 20250.1606
29 Oct 20250.12042
16 Nov 20250.12678
18 Nov 20250.32174
21 Nov 20250.12678
29 Nov 20250.12845
4 Jan 20260.13571
21 Feb 20260.12116
3 Mar 20260.13173
6 Apr 20260.12116
15 May 20260.13773
15 Jun 20260.097
17 Jun 20260.09835
9 Jul 20260.09756
9 Aug 20260.09835
19 Aug 20260.10026

40 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.10026Published · CISA KEV2024-09-10Index as of2026-09-04

Listed by CISA on the day it published, exploit probability more than doubled between 2025-11-16 and 2025-11-18 (0.12678 → 0.32174) and the record had been public for 1 year, 11 months when this index was last written.

No material movement in 16 days as of the last ingest this index recorded.

Published 2024-09-10 receipt · CISA KEV 2024-09-10 receipt · Index as of 2026-09-04 derived

The pattern, elsewhere

This record is one instance of CWE-693, protection mechanism failure. The index holds 839 prior instances of this class, 13 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2024-38213 · Microsoft Windows 10 Version 1809matches 7 of 9KEV listed · 2024receipt
CVE-2024-21412 · Microsoft Windows 10 Version 1809matches 6 of 9KEV listed · 2024receipt
CVE-2026-21510 · Microsoft Windows 10 Version 1607matches 6 of 9KEV listed · 2026receipt
CVE-2026-21513 · Microsoft Windows 10 Version 1607matches 6 of 9KEV listed · 2026receipt
CVE-2026-32202 · Microsoft Windows 10 Version 1607matches 6 of 9KEV listed · 2026receipt
CVE-2024-29988 · Microsoft Windows 10 Version 1809matches 6 of 9KEV listed · 2024receipt

"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1

839 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.

No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.

Siblings and hubs

Records related to this one

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These are index-wide views, not findings about CVE-2024-38217.

What usually comes next

Everything above needs no account. What is below is work: assembling it, scoping it to your estate, watching it, and handing it to someone else.

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