CVE-2019-1064
highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.069 · 94 %ileexploit · PoCEURUUSadded 2022-03-15remediate by 2022-04-05
required action Apply updates per vendor instructions.
EPSS · scored 2026-10-27
Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerability
An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links. An attacker who successfully exploited this vulnerability could run processes in an elevated context. An attacker could then install programs; view, change or delete data. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The security update addresses the vulnerability by correcting how Windows AppX Deployment Service handles hard links.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (3)
Public proof-of-concept and weaponised exploit code.
affected products (39)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- http://www.microsoft.comcnnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1064cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1064cnnvd
- https://portal.msrc.microsoft.com/zh-CN/security-guidance/advisory/CVE-2019-1064Patchcnnvd
- https://www.securityfocus.com/bid/108587cnnvd
- https://www.zdnet.com/article/researcher-publishes-windows-zero-days-for-the-third-day-in-a-row/cnnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1064enisa_euvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1064PatchVendor Advisorynvd
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