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CVE-2019-0841

92
FAUCET Score

CVE-2019-0841 is an elevation of privilege vulnerability in the Windows AppX Deployment Service (AppXSVC) affecting multiple Windows 10 and Server versions, caused by improper handling of hard links. With a CVSS score of 7.8 (High), it allows a local attacker to gain full control over the system with low attack complexity. This vulnerability is actively exploited, including in known ransomware campaigns, and has readily available exploit code in Metasploit and ExploitDB, leading to significant community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1703:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1709:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1803:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*
1803CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2016:1803:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
41.40%
Probability of exploitation in next 30 days
EPSS Percentile
98.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Mar 15, 2022
Metasploit: AppXSvc Hard Link Privilege Escalation · Apr 9, 2019
ExploitDB: EDB-47128 · Jul 16, 2019
This CVE's current EPSS score of 0.4140 is in the 100th percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (16)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1703 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1703 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1803 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1803 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows Server, version 1803 (Server Core Installation)
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1803 for ARM64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1809 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1809 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1809 for ARM64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2019
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2019 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1709 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1709 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1709 for ARM64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows Server, version 1709 (Server Core Installation)
View patch

Vendor Advisories (1)

microsoft2019-Apr/CVE-2019-0841Important

Windows Elevation of Privilege Vulnerability

Apr 9, 2019

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
packetstormsecurity.com / files/152463/Microsoft-Windows-AppX-Deployment-Service-Privilege-Escalation.html
Third Party AdvisoryVDB Entry
packetstormsecurity.com / files/153009/Internet-Explorer-JavaScript-Privilege-Escalation.html
Third Party AdvisoryVDB Entry
packetstormsecurity.com / files/153114/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html
Third Party AdvisoryVDB Entry
packetstormsecurity.com / files/153215/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html
Third Party AdvisoryVDB Entry
packetstormsecurity.com / files/153642/AppXSvc-Hard-Link-Privilege-Escalation.html
ExploitThird Party AdvisoryVDB Entry
portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2019-0841
PatchVendor Advisory
exploit-db.com / exploits/46683
ExploitThird Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-19-360
Third Party AdvisoryVDB Entry