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CVE-2019-0841

An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links, aka 'Windows Elevation...

Basic Information

CVE State
PUBLISHED
Reserved Date
November 26, 2018
Published Date
April 09, 2019
Last Updated
February 07, 2025
Vendor
Microsoft
Product
Windows, Windows Server
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.

CVSS Scores

CVSS v3.1

7.8 - HIGH

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC Information

Exploitation
active
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (added 2022-03-15 00:00:00 UTC) Source
Proof of Concept Available
Yes (added 2022-04-09 05:19:25 UTC) Source
Used in Malware
Yes (added 2022-03-15 00:00:00 UTC) Source

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841 https://www.exploit-db.com/exploits/46683/ http://packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Service-Privilege-Escalation.html https://www.zerodayinitiative.com/advisories/ZDI-19-360/ http://packetstormsecurity.com/files/153009/Internet-Explorer-JavaScript-Privilege-Escalation.html http://packetstormsecurity.com/files/153114/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html http://packetstormsecurity.com/files/153215/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html http://packetstormsecurity.com/files/153642/AppXSvc-Hard-Link-Privilege-Escalation.html

Known Exploited Vulnerability Information

Source Added Date
CISA 2022-03-15 00:00:00 UTC

Scanner Integrations

Scanner URL Date Detected
Metasploit https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/appxsvc_hard_link_privesc.rb 2025-04-29 11:01:40 UTC

Potential Proof of Concepts

Warning: These PoCs have not been tested and could contain malware. Use at your own risk.

appxsvc_hard_link_privesc

Type: metasploit • Created: Unknown

Metasploit module for CVE-2019-0841

mappl3/CVE-2019-0841

Type: github • Created: 2022-04-09 05:19:25 UTC • Stars: 0

0x00-0x00/CVE-2019-0841-BYPASS

Type: github • Created: 2019-06-11 20:05:26 UTC • Stars: 59

A fully automatic CVE-2019-0841 bypass targeting all versions of Edge in Windows 10.

likekabin/CVE-2019-0841

Type: github • Created: 2019-04-10 14:58:22 UTC • Stars: 2

rogue-kdc/CVE-2019-0841

Type: github • Created: 2019-04-05 12:53:52 UTC • Stars: 240

PoC code for CVE-2019-0841 Privilege Escalation vulnerability