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zdiAbdelhamid NaceriZDI-21-1161
HistoryOct 14, 2021 - 12:00 a.m.

Microsoft Windows AppX Deployment Service Directory Junction Privilege Escalation Vulnerability

2021-10-1400:00:00
Abdelhamid Naceri
www.zerodayinitiative.com
8

0.0005 Low

EPSS

Percentile

16.0%

This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the AppX Deployment Service. By creating a directory junction, an attacker can abuse the service to delete the contents of a chosen directory. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

0.0005 Low

EPSS

Percentile

16.0%