Vulnerability in Microsoft Windows
CVE-2019-0841
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-2…
EPSS: 0.827 (99.3th percentile) — read the EPSS interpretation.
Affected products
- Microsoft Windows — versions 10 Version 1703 for 32-bit Systems, 10 Version 1703 for x64-based Systems, 10 Version 1709 for 32-bit Systems
- Microsoft Windows Server — versions version 1709 (Core Installation), version 1803 (Core Installation), 2019
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Known ransomware campaign use: yes.
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841 (x_refsource_MISC)
- 46683 (exploit, x_refsource_EXPLOIT-DB)
- packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Service-… (x_refsource_MISC)
- www.zerodayinitiative.com/advisories/ZDI-19-360/ (x_refsource_MISC)
- packetstormsecurity.com/files/153009/Internet-Explorer-JavaScript-Privilege-Esc… (x_refsource_MISC)
- packetstormsecurity.com/files/153114/Microsoft-Windows-AppX-Deployment-Service-… (x_refsource_MISC)
- packetstormsecurity.com/files/153215/Microsoft-Windows-AppX-Deployment-Service-… (x_refsource_MISC)
- packetstormsecurity.com/files/153642/AppXSvc-Hard-Link-Privilege-Escalation.html (x_refsource_MISC)
Frequently asked questions
- What is CVE-2019-0841?
- CVE-2019-0841 is a vulnerability in Microsoft Windows. Published 2019-04-09.
- Is CVE-2019-0841 known to be exploited?
- Yes. CVE-2019-0841 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-15), indicating it is being actively exploited. 67 public proof-of-concept repositories are indexed.