Overview
Microsoft Windows SmartScreen contains a security feature bypass vulnerability that allows an attacker to bypass the SmartScreen user experience and inject code to potentially gain code execution, which could lead to some data exposure, lack of system availability, or both.
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2024-21351; https://nvd.nist.gov/vuln/detail/CVE-2024-21351
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2024-21351 |
| Vendor / Product | Microsoft — Windows |
| NVD Published | 2024-02-13 |
| NVD Last Modified | 2025-10-28 |
| CVSS 3.1 Score | 7.6 |
| CVSS 3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L |
| Severity | HIGH |
| CWE | CWE-94 |
| CISA KEV Added | 2024-02-13 |
| CISA KEV Deadline | 2024-03-05 |
| Known Ransomware Use | No |
CVSS 3.1 Breakdown
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
Low
Required Action
CISA BOD 22-01 Deadline: 2024-03-05.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Timeline
| Date | Event |
|---|---|
| 2024-02-13 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2024-03-05 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2024-21351 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |