Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerability

HIGH 7.8EXPLOITED (CISA KEV)CVE-2019-0841 · Published 09/04/2019 · updated 17/06/2026

Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 15/03/2022. Patch affected systems as an emergency. It is known to be used in ransomware campaigns.

Package	Affected versions	Patched versions
Windows Microsoft	Versions not published yet (product named by CISA KEV)

Description

An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0730, CVE-2019-0731, CVE-2019-0796, CVE-2019-0805, CVE-2019-0836.

References

packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Service-Privilege-Escalation.html · Third Party Advisory
packetstormsecurity.com/files/153009/Internet-Explorer-JavaScript-Privilege-Escalation.html · Third Party Advisory
packetstormsecurity.com/files/153114/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html · Third Party Advisory
packetstormsecurity.com/files/153215/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html · Third Party Advisory
packetstormsecurity.com/files/153642/AppXSvc-Hard-Link-Privilege-Escalation.html · Exploit
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841 · Patch
exploit-db.com/exploits/46683 · Exploit
zerodayinitiative.com/advisories/ZDI-19-360 · Third Party Advisory
cisa.gov/known-exploited-vulnerabilities-catalog · US Government Resource
CISA KEV · CVE-2019-0841

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