CVE-2019-1064 Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation
An attacker with local access can exploit improper hard link handling in Windows AppX Deployment Service to gain elevated privileges and control the system.
- Exploited in the wild
- Since 15 Mar 2022
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-1064?
CVE-2019-1064 is a high-severity vulnerability in Microsoft Windows 10 1607, published on 12 Jun 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-59
Which versions are affected by CVE-2019-1064?
It affects 11 products.
Products include Microsoft Windows 10 1607, Microsoft Windows 10 1703, Microsoft Windows 10 1709, Microsoft Windows 10 1803, Microsoft Windows 10 1809, Microsoft Windows 10 1903 and 5 more.
How do I fix CVE-2019-1064?
No fix has been published for CVE-2019-1064 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 5 Apr 2022.
Is CVE-2019-1064 being exploited?
Yes. Attackers have exploited CVE-2019-1064 in the wild since at least 15 Mar 2022, including in ransomware campaigns.
Public exploit code: 3 proofs of concept on GitHub.
Other vulnerabilities in Microsoft Windows 10 1607
- CVE-2026-33824 Microsoft Internet Key Exchange (IKE) Service Extensions Double Free
- CVE-2026-21510 Microsoft Windows Shell Protection Mechanism Failure
- CVE-2026-21513 Microsoft MSHTML Framework Protection Mechanism Failure
- CVE-2023-32049 Microsoft Windows Defender SmartScreen Security Feature Bypass
- CVE-2023-29360 Microsoft Streaming Service Untrusted Pointer Dereference
Sources
Also known as GHSA-7q5j-w2g3-7f8v.