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CVE-2018-8449

LowPublished

A security feature bypass exists when Device Guard incorrectly validates an untrusted file, aka "Device Guard Security Feature Bypass Vulnerability." This...

Published: Sep 13, 2018
Updated: Aug 5, 2024
Assigning CNA: microsoft
Evidence observed: Sep 19, 2018

Primary CVSS

3.3/ 10Low

nvd · CVSS 3.0

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS probability estimate

4.2%

Low · next 30 days

Percentile: 90.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

A security feature bypass exists when Device Guard incorrectly validates an untrusted file, aka "Device Guard Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.

Sources

Microsoft Windows - 'CiSetFileCache' WDAC Security Feature Bypass TOCTOUExploit
Google Security Research · windows · Sep 19, 2018

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