Home/CVE/Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability
CVE

CVE-2024-43451

Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability

NTLM Hash Disclosure Spoofing Vulnerability.

MEDIUM · CVSS 6.5 ⚠ CISA KEV EPSS 0.90313
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
Sigma rules0 YARA rules0
⬢

Required Remediation

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

⬡

Weakness Classification

CWE-73External Control of File Name or Path
▤

Affected Products & Versions

15
microsoft windows 10 1507< 10.0.10240.20826
microsoft windows 10 1607< 10.0.14393.7515
microsoft windows 10 1809< 10.0.17763.6532
microsoft windows 10 21h2< 10.0.19044.5131
microsoft windows 10 22h2< 10.0.19045.5131
microsoft windows 11 22h2< 10.0.22621.4460
microsoft windows 11 23h2< 10.0.22631.4460
microsoft windows 11 24h2< 10.0.26100.2314
◈

Detection Rules (IDS/IPS)

1
et-openET EXPLOIT NTLM Hash Disclosure via InternetShortcut File Inbound with UNC Path Inbound (CVE-2024-43451)attempted-user
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 Nov 2024 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

2
msrcCVE-2024-43451Spoofing
cisaKEV-CVE-2024-43451
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-43451US Government Resource
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