CVE-2019-1064

Windows Elevation of Privilege 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.

Affected

Microsoft · Windows 10 Version 1703 · Windows 10 Version 1803 · Windows Server, version 1803 (Server Core Installation) · Windows 10 Version 1809 · Windows Server 2019 · Windows Server 2019 (Server Core installation)

CVSS v3.1 NVD

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 NVD

7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS

6.89% chance of exploitation in the next 30 days, 94th percentile

CISA KEV

added 2022-03-15, used in ransomware campaigns

Published

2019-06-12

Updated

2025-10-21

Proof-of-concept exploits (2)

• 0x00-0x00/CVE-2019-106411★ · 2019-06-12
• RythmStick/CVE-2019-106426★ · 2019-06-13

Security advisories

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1064
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1064

References

• CVE Record
• NVD entry

Related

• CVE-2014-6271
• CVE-2015-3224
• CVE-2016-10033
• CVE-2016-2098
• CVE-2017-5638
• CVE-2017-9805