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Microsoft · Windows

CVE-2024-43451

Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability

CISA KEV record

CISA date added
2024-11-12
CISA due date
2024-12-03
Known ransomware use
Unknown

NVD risk context

6.5 MEDIUM

CVSS is a technical severity score. CISA’s KEV status remains the evidence that this vulnerability is known to be exploited.

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Attack vector
Network
The vulnerable service can be reached remotely over a network.
Attack complexity
Low
Exploitation does not require unusual conditions beyond normal attacker control.
Privileges required
None
The attacker does not need an existing account or privileges.
User interaction
Required
A user must take an action, such as opening a file or link.

Description

Microsoft Windows contains an NTLMv2 hash spoofing vulnerability that could result in disclosing a user's NTLMv2 hash to an attacker via a file open operation. The attacker could then leverage this hash to impersonate that user.

Required action

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

NVD reference index

Vendor and remediation references

NVD has tagged these sources as vendor advisories, patches, mitigations, or release notes.

Other NVD references (1)

MITRE CWE context

CWE classification

CWE-73 External Control of File Name or Path

The product allows user input to control or influence paths or file names that are used in filesystem operations.

View official MITRE CWE details ↗

NVD record timing

NVD record timeline

These dates describe NVD’s record, not CISA’s KEV addition or remediation due date.

NVD published
Nov 12, 2024, 06:15 PM UTC
When NVD first published this CVE record.
NVD last updated
Jun 17, 2026, 07:51 AM UTC
When NVD last changed its analysis or record data.
Advanced: view the technical CVSS vector

This standardized code is intended for security tools and technical analysts. The plain-language risk summary above explains its main points.

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

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CISA notes

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43451 ; https://nvd.nist.gov/vuln/detail/CVE-2024-43451