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Vulnerabilities/CVE-2024-43451Public Intelligence Dossier
Source: microsoft · Limited verification•Last verified: •Collection Degraded
CVE-2024-43451ListedMEDIUM (raw)CVSS 6.5CWE-73

NTLM Hash Disclosure Spoofing Vulnerability

Published: 12 Nov 2024•Last updated: 17 Jun 2026, 01:21 PM IST•Source identifier: secure@microsoft.com
Dossier completeness: source-provided sections 3 / 3 · rule guidance available. Missing source facts count as incomplete.
Official source
CISA KEV catalog
Listed
Added12 Nov 2024
Due03 Dec 2024
RansomwareUnknown
CVSS score
6.5MEDIUM (raw)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Metric sourcesecure@microsoft.com
EPSS probability
84.3%0.843
Percentile100th
Weakness type
CWE-73
NVD-CWE-noinfo
Remediation
Patch status unknown
No fixed version or KB recorded

Why It Matters

Analysis dossier

Why It Matters

NTLM Hash Disclosure Spoofing Vulnerability

SOC priority

Immediate Attention

Actively exploited (source statement)

Yes

Publicly disclosed

Unknown

Risk basis: CISA KEV exploitation signal; Microsoft or Microsoft-managed product relevance; Known exploitation signal from CISA KEV or ransomware metadata; Source-confirmed exploitation or CISA KEV/ransomware metadata

Affected Products & Remediation

15 source-backed products
Affected products and versions (source)
  • microsoft windows 10 1507 · < 10.0.10240.20826 · NVD CPE · Source
  • microsoft windows 10 1607 · < 10.0.14393.7515 · NVD CPE · Source
  • microsoft windows 10 1809 · < 10.0.17763.6532 · NVD CPE · Source
  • microsoft windows 10 21h2 · < 10.0.19044.5131 · NVD CPE · Source
  • microsoft windows 10 22h2 · < 10.0.19045.5131 · NVD CPE · Source
  • microsoft windows 11 22h2 · < 10.0.22621.4460 · NVD CPE · Source
  • microsoft windows 11 23h2 · < 10.0.22631.4460 · NVD CPE · Source
  • microsoft windows 11 24h2 · < 10.0.26100.2314 · NVD CPE · Source
  • microsoft windows server 2008 · r2 · NVD CPE · Source
  • microsoft windows server 2012 · r2 · NVD CPE · Source
  • microsoft windows server 2016 · < 10.0.14393.7515 · NVD CPE · Source
  • microsoft windows server 2019 · < 10.0.17763.6532 · NVD CPE · Source
  • microsoft windows server 2022 · < 10.0.20348.2849; 23h2 < 10.0.25398.1251 · NVD CPE · Source
  • microsoft windows server 2022 23h2 · < 10.0.25398.1251 · NVD CPE · Source
  • microsoft windows server 2025 · < 10.0.26100.2314 · NVD CPE · Source
Recorded patch / KBNot provided by source

Vendor or catalog guidance (source)

  • CISA KEV: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Known exploitation (source facts)

Only what a source states. Unknown means no source has said either way; it is not "not exploited".

CISA KEV
Listed
Exploited (source statement)
Yes
Publicly disclosed (source)
Unknown

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

Suggested hunting (rule-based inference)

SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.

Matched kev-network-exposure (CVSS AV:N, CISA KEV Listed); microsoft-enterprise (Affected product: microsoft windows 10 1507, Vendor: microsoft)

Exposure

  1. Identify assets with the exact CVE and confirm the affected product/version against the advisory.Telemetry: DeviceTvmSoftwareVulnerabilities · KEV listing raises urgency, but inventory is needed to establish local exposure. · Rule kev-network-exposure
  2. Identify affected Microsoft products and compare local builds with the MSRC advisory.Telemetry: DeviceTvmSoftwareVulnerabilities · The MSRC product/build mapping establishes applicability. · Rule microsoft-enterprise

Exploitation evidence

  1. Review relevant edge or application access logs for unusual requests around the advisory window.Telemetry: CommonSecurityLog · Log review is a hunting hypothesis; KEV listing alone does not show local exploitation. · Rule kev-network-exposure
Show more (2)

Exploitation evidence

  1. Review the advisory's documented behavior on matching hosts before selecting a hunt.Telemetry: DeviceProcessEvents · Product family alone does not justify a CVE-specific detection. · Rule microsoft-enterprise

Response

  1. Recheck the affected assets after the source-stated mitigation or update is applied.Telemetry: DeviceTvmSoftwareVulnerabilities · A follow-up inventory check verifies local remediation. · Rule kev-network-exposure

CISA KEV Record

Catalog entry
12 Nov 2024
Required action due
03 Dec 2024
Known ransomware use
Unknown

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

Change History & Source Data

— No recorded material change

CNA / source
secure@microsoft.com
Record status · verification
UPDATED · Microsoft primary source linked; CISA KEV confirmed
CPE
cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*, cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*

Evidence & Provenance

4 public sources
CISA KEV CatalogAdded 2024-11-12msrc.microsoft.comSource recordnvd.nist.govSource recordcisa.govSource record

Linked by the query's stored exact CVE association. Review required tables and validation status before use.

Detection Hunting Query
Target: DeviceTvmSoftwareVulnerabilities•Defender XDR
Detect endpoints exposed to CVE-2024-43451
Purpose: Exposure assessment (Category: Exposure Check)Why linked: Query metadata names CVE-2024-43451
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2024-43451"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel desc
Schema Checked · Not runtime validatedSource: SecOps Signal deterministic template · Limited verificationStatic screening: Passed structure and schema checks; tenant execution is not verified.
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Correlated briefings

SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.