CVE-2019-0841 Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation
Attackers can exploit improper hard link handling in Windows AppX Deployment Service to elevate privileges on affected systems.
- 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-2019-0841?
CVE-2019-0841 is a high-severity vulnerability in Microsoft Windows 10 1809, published on 9 Apr 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, 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.
Weakness: CWE-59
Which versions are affected by CVE-2019-0841?
It affects 6 products.
Products include Microsoft Windows 10 1703, Microsoft Windows 10 1709, Microsoft Windows 10 1803, Microsoft Windows 10 1809, Microsoft Windows Server 2016, Microsoft Windows Server 2019.
How do I fix CVE-2019-0841?
No fix has been published for CVE-2019-0841 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 5 Apr 2022.
Is CVE-2019-0841 being exploited?
Yes. Attackers have exploited CVE-2019-0841 in the wild since at least 15 Mar 2022, including in ransomware campaigns.
Public exploit code: 1 Metasploit module, 5 Exploit-DB entries and 4 proofs of concept on GitHub.
Other vulnerabilities in Microsoft Windows 10 1809
Sources
Also known as GHSA-wqq2-j7vf-7rw9.