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CVE-2019-1129

63
FAUCET Score

CVE-2019-1129 is an elevation of privilege vulnerability in the Windows AppX Deployment Service (AppXSVC) that arises from improper handling of hard links, affecting multiple versions of Windows 10 and Windows Server. This vulnerability carries a high CVSS score of 7.8, indicating a local attack vector with low complexity, allowing an authenticated attacker to achieve high impact on confidentiality, integrity, and availability. It is actively exploited in the wild, including in known ransomware campaigns, and has garnered significant community discussion and media coverage despite a lack of public exploit code.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1703:-:*:*:*:*:*:x64:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1703:-:*:*:*:*:*:x86:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:arm64:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x64:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x86:*

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
1.78%
Probability of exploitation in next 30 days
EPSS Percentile
76.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
Added to KEV · Mar 15, 2022
This CVE's current EPSS score of 0.0178 is in the 96th percentile among its peer group of 17,070 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 (19)

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 10 Version 1903 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1903 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows 10 Version 1903 for ARM64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Windows Server, version 1903 (Server Core installation)
View patch

Vendor Advisories (1)

microsoft2019-Jul/CVE-2019-1129Important

Windows Elevation of Privilege Vulnerability

Jul 9, 2019

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2019-1129
PatchVendor Advisory