Microsoft Windows SmartScreen Security Feature Bypass Vulnerability

Added to KEV
2023-11-14
Federal due date
2023-12-05
Vendor
Microsoft
Product
Windows
EPSS
99.6th percentile (score 0.902, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2023-36025

CISA short description

Microsoft Windows SmartScreen contains a security feature bypass vulnerability that could allow an attacker to bypass Windows Defender SmartScreen checks and their associated prompts.

Required action

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

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.