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Microsoft · Windows

CVE-2023-24880

Microsoft Windows SmartScreen Security Feature Bypass Vulnerability

CISA KEV record

CISA date added
2023-03-14
CISA due date
2023-04-04
Known ransomware use
Known

NVD risk context

4.4 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
Local
An attacker needs local access to the affected system.
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 SmartScreen contains a security feature bypass vulnerability that could allow an attacker to evade Mark of the Web (MOTW) defenses via a specially crafted malicious file.

Required action

Apply updates per vendor instructions.

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-863 Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

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
Mar 14, 2023, 05:15 PM UTC
When NVD first published this CVE record.
NVD last updated
Jun 17, 2026, 05:40 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:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

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CISA notes

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-24880; https://nvd.nist.gov/vuln/detail/CVE-2023-24880