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Vulnerability Intelligence

CVE-2024-43451

MediumExploitedPublic exploit

NTLM Hash Disclosure Spoofing Vulnerability

Published Nov 12, 2024 · Updated Oct 21, 2025

Key Facts

Patch immediately
  • CVE-2024-43451 is a medium-severity vulnerability (CVSS 6.5 v3.1) affecting Windows 10 1507 (Microsoft), Windows 10 1607 (Microsoft), Windows 10 1809 (Microsoft) and 22 more products.
  • It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Nov 12, 2024 and is known to be used in ransomware campaigns. Public exploit code is available.
  • EPSS estimates a 85% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Windows 10 1507 10.0.10240.20826, Windows 10 1607 10.0.14393.7515, Windows 10 1809 10.0.17763.6532.
  • Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

6.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS (30-day exploit likelihood)

85%

Higher than 99.7% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings, used by ransomware

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2024-43451 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

NTLM Hash Disclosure Spoofing Vulnerability

Known-Exploited Catalog Listings

CatalogAddedRemediation dueRansomware use
CISA KEVNov 12, 2024Dec 3, 2024Not reported
Industry KEV feedNov 12, 2024Dec 3, 2024Known
CIRCL KEVNov 12, 2024Dec 3, 2024Not reported
ENISA EUVDNov 12, 2024n/aNot reported

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Affected Products

52 affected entries in total
ProductAffected versionsFixed in
Windows 10 1507MicrosoftSee advisory10.0.10240.20826
Windows 10 1607MicrosoftSee advisory10.0.14393.7515
Windows 10 1809MicrosoftSee advisory10.0.17763.6532
Windows 10 21h2MicrosoftSee advisory10.0.19044.5131
Windows 10 22h2MicrosoftSee advisory10.0.19045.5131
20 more affected products in the full CVE brief

Patched Releases

Windows 10 1507

10.0.10240.20826

Windows 10 1607

10.0.14393.7515

Windows 10 1809

10.0.17763.6532

Windows 10 21h2

10.0.19044.5131

Windows 10 22h2

10.0.19045.5131

Windows 11 22h2

10.0.22621.4460

Windows 11 23h2

10.0.22631.4460

Windows 11 24h2

10.0.26100.2314

Windows Server 2016

10.0.14393.7515

Windows Server 2019

10.0.17763.6532

Windows Server 2022

10.0.20348.2849

Windows Server 2022 23h2

10.0.25398.1251

Windows Server 2025

10.0.26100.2314

Windows 10 Version 1507

10.0.10240.20826

Windows 10 Version 1607

10.0.14393.7515

Windows 10 Version 1809

10.0.17763.6532

Windows 10 Version 21H2

10.0.19044.5131

Windows 10 Version 22H2

10.0.19045.5131

Windows 11 version 22H2

10.0.22621.4460

Windows 11 version 22H3

10.0.22631.4460

Windows 11 Version 23H2

10.0.22631.4460

Windows 11 Version 24H2

10.0.26100.2314

Windows Server 2008 Service Pack 2

6.0.6003.22966

Windows Server 2008 R2 Service Pack 1

6.1.7601.27415

Windows Server 2008 R2 Service Pack 1 (Server Core installation)

6.1.7601.27415

Timeline

  1. Publicly disclosed

    Nov 12, 2024

  2. Added to CISA KEV

    Nov 12, 2024

  3. Added to Industry KEV feed

    Nov 12, 2024

  4. Added to CIRCL KEV

    Nov 12, 2024

  5. Added to ENISA EUVD

    Nov 12, 2024

  6. Last updated

    Oct 21, 2025

Weakness Type

  • CWE-73 External Control of File Name or Path

References

5 more references in the full CVE brief

FAQ

Common Questions.

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