SARA / Free Tools / CVE / CVE-2019-0841

CVE-2019-0841 — Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnera

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-20

CVSS
EPSS
82.65% (top 0.80%)
CWE
Published
2019-04-09T20:18:32.000Z
Last modified
2025-10-21T23:45:39.637Z
CVSS vector
CISA KEV — Actively Exploited
Added to KEV
2022-03-15
BOD 22-01 due
2022-04-05
Ransomware use
Known

01What is this vulnerability?

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.

02Affected products

VendorProductVersions
MicrosoftWindows10 Version 1703 for 32-bit Systems, 10 Version 1703 for x64-based Systems, 10 Version 1709 for 32-bit Systems, 10 Version 1709 for x64-based Systems, 10 Version 1803 for 32-bit Systems, 10 Version 1803 for x64-based Systems, 10 Version 1803 for ARM64-based Systems, 10 Version 1809 for 32-bit Systems, 10 Version 1809 for x64-based Systems, 10 Version 1809 for ARM64-based Systems, 10 Version 1709 for ARM64-based Systems
MicrosoftWindows Serverversion 1709 (Core Installation), version 1803 (Core Installation), 2019, 2019 (Core installation)

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2022-03-15. Ransomware use: Known.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

CVE-2019-0730
Cited in vendor advisory
CVE-2019-0731
Cited in vendor advisory
CVE-2019-0796
Cited in vendor advisory
CVE-2019-0805
Cited in vendor advisory
CVE-2019-0836
Cited in vendor advisory

08Timeline

09References

Want this in your SOAR or SIEM?
SARA's API returns EPSS, CVSS, KEV, and an analyst-grade summary in one call.
Read the API reference →