CVE-2019-0841
An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links, aka 'Windows…
- 7.8HighCVSS base score
- 41.4%Exploitation in 30 daysEPSS · top 1.3% of all CVEs
- YesKnown exploitedin CISA's KEV since 15 Mar 2022
- 5Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerability.
- Added
- 15 Mar 2022
- Fix due (US federal)
- 5 Apr 2022
- Used by ransomware
- Known
Apply updates per vendor instructions.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 15 Mar 2022.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module and 4 Exploit-DB entries for it. A reference of the record is tagged as an exploit. CISA's SSVC rates its exploitation: it is being exploited.
Show the exploits6
Metasploit modules1 module
- AppXSvc Hard Link Privilege Escalation (Metasploit module) (opens in a new tab)
exploit/windows/local/appxsvc_hard_link_privescRank normaldisclosed 9 Apr 2019
Exploit-DB4 entries
- Microsoft Windows 10 < build 17763 - AppXSvc Hard Link Privilege Escalation (Metasploit) (Exploit-DB entry) (opens in a new tab)
EDB-ID 47128local, windowspublished 16 Jul 2019Verified
- Microsoft Windows - AppX Deployment Service Local Privilege Escalation (3) (Exploit-DB entry) (opens in a new tab)
EDB-ID 46976local, windowspublished 7 Jun 2019Not verified
- Microsoft Windows - AppX Deployment Service Local Privilege Escalation (2) (Exploit-DB entry) (opens in a new tab)
EDB-ID 46938local, windowspublished 23 May 2019Not verified
- Microsoft Windows - AppX Deployment Service Privilege Escalation (Exploit-DB entry) (opens in a new tab)
EDB-ID 46683local, windowspublished 9 Apr 2019Not verified
References tagged exploit1 reference
- 46683 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By microsoft
- 4 months later
· 4 months later
Published
- 3 years later
· 3 years later
Added to CISA KEV
Known exploited, also by ransomware
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 41.4% · top 1.3% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 10 Version 1703 for 32-bit Systems
- affected 10 Version 1703 for x64-based Systems
- affected 10 Version 1709 for 32-bit Systems
- affected 10 Version 1709 for x64-based Systems
- affected 10 Version 1803 for 32-bit Systems
- affected 10 Version 1803 for x64-based Systems
- affected 10 Version 1803 for ARM64-based Systems
- affected 10 Version 1809 for 32-bit Systems
- affected 10 Version 1809 for x64-based Systems
- affected 10 Version 1809 for ARM64-based Systems
- affected 10 Version 1709 for ARM64-based Systems
- affected version 1709 (Core Installation)
- affected version 1803 (Core Installation)
- affected 2019
- affected 2019 (Core installation)
References
9
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841 (opens in a new tab)x_refsource_MISCx_transferred
- 46683 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- http://packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Service-Privilege-Escalation.html (opens in a new tab)x_refsource_MISCx_transferred
- https://www.zerodayinitiative.com/advisories/ZDI-19-360/ (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/153009/Internet-Explorer-JavaScript-Privilege-Escalation.html (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/153114/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/153215/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/153642/AppXSvc-Hard-Link-Privilege-Escalation.html (opens in a new tab)x_refsource_MISCx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0841 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2019-1592 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2019-0841)Record last updated .