CVE-2019-0841 KEV EXPLOIT
7.8
HIGH · CVSS 3.1 · EPSS 41.4% (pctl 99)
Patch first
On CISA KEV — known exploited in the wild, due 2022-04-05.
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.
Scoring
| CVSS | 7.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 41.4% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-59 |
| On CISA KEV | yes — remediate by 2022-04-05 |
| Public exploit | yes |
| Published | 2019-04-09 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerability |
|---|---|
| Added | 2022-03-15 |
| Due | 2022-04-05 |
| Vendor / product | Microsoft / Windows |
| Ransomware use | known |
Affected (6)
| Vendor | Product |
|---|---|
| microsoft | windows 10 1703 |
| microsoft | windows 10 1709 |
| microsoft | windows 10 1803 |
| microsoft | windows 10 1809 |
| microsoft | windows server 2016 |
| microsoft | windows server 2019 |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Microsoft Windows 10 < build 17763 - AppXSvc Hard Link Privilege Escalation (Metasploit) | 2019-07-16 |
| exploit-db | Microsoft Windows - AppX Deployment Service Local Privilege Escalation (3) | 2019-06-07 |
| exploit-db | Microsoft Windows - AppX Deployment Service Local Privilege Escalation (2) | 2019-05-23 |
| exploit-db | Microsoft Windows - AppX Deployment Service Privilege Escalation | 2019-04-09 |
References
- http://packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Service-Privilege-Escalation.html
- 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
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841
- https://www.exploit-db.com/exploits/46683/
- https://www.zerodayinitiative.com/advisories/ZDI-19-360/
- http://packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Service-Privilege-Escalation.html
- 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
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841
- https://www.exploit-db.com/exploits/46683/
- https://www.zerodayinitiative.com/advisories/ZDI-19-360/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0841
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