Overview
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.
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43451 ; https://nvd.nist.gov/vuln/detail/CVE-2024-43451
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2024-43451 |
| Vendor / Product | Microsoft — Windows |
| NVD Published | 2024-11-12 |
| NVD Last Modified | 2025-10-28 |
| CVSS 3.1 Score | 6.5 |
| CVSS 3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| Severity | MEDIUM |
| CWE | CWE-73 |
| CISA KEV Added | 2024-11-12 |
| CISA KEV Deadline | 2024-12-03 |
| Known Ransomware Use | No |
CVSS 3.1 Breakdown
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Required Action
CISA BOD 22-01 Deadline: 2024-12-03.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Timeline
| Date | Event |
|---|---|
| 2024-11-12 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2024-12-03 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2024-43451 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |