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Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
CVE-2024-381934 of 4 sources documented this
rank 76 = 40 + 20 + 1 + 9 + 6
rank@v1 · act now
Someone is already using it
CISA KEV catalog · public proof-of-concept · FIRST EPSS
EPSS 0.28529 · CISA KEV listed · without this subject the record ranks 36
What it costs you if it fires
NVD CVSS base score, then the CNA's own
CVSS 7.8, 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 2025-11-24 · without this subject the record ranks 75
How much of the world it touches
NVD CPE configurations
16 products in the CPE ranges · without this subject the record ranks 67
Someone else already set the date
CISA KEV remediation due date
CISA remediation date held · without this subject the record ranks 70
Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$1.42Mover the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate
$1.42M = $4.99M incident cost x 1 exposure x 0.28529 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.
PLATEAUMinimal movement since 2026-06-15, 81 days at 0.29, as of 2026-09-04. arc-rules@v1
Foresight · where to check next
This record is one instance of CWE-416, use after free. The index holds 8700 prior instances of this class, 105 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1
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 11 Version 24H2? 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.
Watch this record
Matches your own product list against every record this index holds, and tells you when one of them moves.
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Harm, if it fires from the vector and the weakness
Written for the ticket you're about to file.
Reachneeds local access · low privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
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 2024-09-03receipt
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, 2024-08-13.
RUNG 1Nothing observed in held sources
RUNG 2Proof-of-concept published · 1 public repository2024-12-03receipt
RUNG 3Exploited in the wild · CISA KEV listed2024-08-13receipt
Affected productMicrosoft Windows 11 Version 24H2; Microsoft Windows 10 Version 1809; Microsoft Windows Server 2019; Microsoft Windows Server 2019 (Server Core installation); Microsoft Windows Server 2022…receipt
Published rangesmicrosoft windows 10 1507 < 10.0.10240.20751; microsoft windows 10 1607 < 10.0.14393.7259; microsoft windows 10 1809 < 10.0.17763.6189; microsoft windows 10 21h2 < 10.0.19044.4780receipt
Show all 16 published ranges
microsoft windows 10 1507 < 10.0.10240.20751
microsoft windows 10 1607 < 10.0.14393.7259
microsoft windows 10 1809 < 10.0.17763.6189
microsoft windows 10 21h2 < 10.0.19044.4780
microsoft windows 10 22h2 < 10.0.19045.4780
microsoft windows 11 21h2 < 10.0.22000.3147
microsoft windows 11 22h2 < 10.0.22621.4037
microsoft windows 11 23h2 < 10.0.22631.4037
microsoft windows 11 24h2 < 10.0.26100.1457
microsoft windows server 2008 r2
microsoft windows server 2012 < 6.2.9200.25031
microsoft windows server 2012 r2
microsoft windows server 2016 < 10.0.14393.7259
microsoft windows server 2019 < 10.0.17763.6189
microsoft windows server 2022 < 10.0.20348.2655
microsoft windows server 2022 23h2 < 10.0.25398.1085
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.
Attack path
What it is stated by the CNA
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability receipt
NVD's analysis a second authority
weakness
CWE-416
affected versions
microsoft windows 10 1507 < 10.0.10240.20751; microsoft windows 10 1607 < 10.0.14393.7259; microsoft windows 10 1809 < 10.0.17763.6189; and 13 more, listed in full below
17 Mar 20250.62282 · crossed 0.10 and 0.50 · scoring model v2025.03.14
16 Apr 20250.80662
15 May 20250.62277
17 May 20250.78409
15 Jun 20250.67912
11 Nov 20250.78177
15 Jun 20260.27561 · crossed 0.50 · scoring model v2026.06.15
28 Aug 20260.28529
Show all 85 observations
14 Aug 20240.00144
15 Aug 20240.00051
16 Aug 20240.00043
19 Nov 20240.00054
10 Dec 20240.00043
17 Mar 20250.62282
19 Mar 20250.6143
20 Mar 20250.62282
27 Mar 20250.6143
28 Mar 20250.56629
29 Mar 20250.6143
30 Mar 20250.56629
15 Apr 20250.71987
16 Apr 20250.80662
17 Apr 20250.82355
18 Apr 20250.78931
21 Apr 20250.77241
26 Apr 20250.75394
29 Apr 20250.73383
1 May 20250.7468
2 May 20250.75506
3 May 20250.74253
4 May 20250.75506
5 May 20250.74253
6 May 20250.75506
10 May 20250.73341
14 May 20250.71141
15 May 20250.62277
17 May 20250.78409
18 May 20250.82292
19 May 20250.75904
20 May 20250.77056
22 May 20250.75192
28 May 20250.73164
1 Jun 20250.70966
4 Jun 20250.71916
15 Jun 20250.67912
16 Jun 20250.69449
18 Jun 20250.77056
22 Jun 20250.73164
23 Jun 20250.75192
24 Jun 20250.73164
30 Jun 20250.70966
1 Jul 20250.71916
13 Jul 20250.68971
27 Jul 20250.66358
10 Aug 20250.68203
12 Aug 20250.70132
18 Aug 20250.67317
20 Aug 20250.66358
23 Aug 20250.63287
31 Aug 20250.6447
21 Sep 20250.66421
2 Oct 20250.65951
13 Oct 20250.6252
20 Oct 20250.64528
21 Oct 20250.67156
22 Oct 20250.71997
29 Oct 20250.74892
5 Nov 20250.76416
11 Nov 20250.78177
12 Nov 20250.77307
15 Nov 20250.75841
18 Nov 20250.69233
21 Nov 20250.72355
22 Nov 20250.71836
24 Nov 20250.78406
25 Nov 20250.79834
29 Nov 20250.75839
3 Dec 20250.74274
12 Dec 20250.75102
13 Dec 20250.74747
18 Dec 20250.75102
19 Dec 20250.73478
23 Dec 20250.73099
24 Dec 20250.69792
15 Jan 20260.70182
17 Jan 20260.69302
26 Jan 20260.74832
26 Mar 20260.75186
8 Apr 20260.74832
19 Apr 20260.73233
15 Jun 20260.27561
14 Aug 20260.27358
28 Aug 20260.28529
85 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
Listed by CISA on the day it published and the record had been public for 2 years when this index was last written.
Published 2024-08-13 receipt · CISA KEV 2024-08-13 receipt · Public PoC 2024-12-03 receipt · Index as of 2026-09-04 derived
The pattern, elsewhere
This record is one instance of CWE-416, use after free. The index holds 8700 prior instances of this class, 105 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]
CVE-2025-29824 · Microsoft Windows 10 Version 1507matches 9 of 9KEV listed · 2025receipt
CVE-2021-40449 · Microsoft Windows 10 Version 1809matches 9 of 9KEV listed · 2021receipt
CVE-2025-21334 · Microsoft Windows 10 Version 21H2matches 9 of 9KEV listed · 2025receipt
CVE-2025-21335 · Microsoft Windows 10 Version 21H2matches 9 of 9KEV listed · 2025receipt
CVE-2025-30400 · Microsoft Windows 10 Version 1809matches 9 of 9KEV listed · 2025receipt
CVE-2025-32701 · Microsoft Windows 10 Version 1507matches 9 of 9KEV listed · 2025receipt
"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
8700 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
None. No alias set, and nothing in the corpus cites this identifier or shares its product family within 60 days.