CVE-2019-1130VulnerabilityPublished 05/23/2022Updated 10/24/2026

CVE-2019-1130: Microsoft Windows AppX Deployment Service Privilege Escalation Vulnerability

Affects Microsoft WindowsSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 05/23/2022
KEV deadline: 06/13/2022
Ransomware: Used in ransomware campaigns
EPSS: 1.7% chance of exploitation in 30 days – higher than 77% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2019-1130 (opens in a new tab)

Description

CVE-2019-1130 is a privilege escalation vulnerability in Microsoft Windows AppX Deployment Service (AppXSVC) caused by improper handling of hard links. This flaw allows attackers to gain elevated privileges on affected systems. It has been exploited in the wild and is known to have been used in ransomware campaigns.

Summary

The vulnerability CVE-2019-1130 exists in the Windows AppX Deployment Service (AppXSVC) where improper handling of hard links can lead to privilege escalation. This security flaw enables attackers to escalate their privileges on a Windows system by exploiting the way AppXSVC processes hard links. The vulnerability has been observed in active exploitation scenarios, including ransomware campaigns.

Impact

Successful exploitation of this vulnerability allows an attacker to escalate privileges on a Windows system, potentially gaining higher-level access than intended. This can facilitate further malicious activities such as deploying ransomware or other malware with elevated permissions.

Mitigation

No explicit patch or remediation details are provided in the available data. Patch status is not yet confirmed — check the Microsoft vendor advisory for current remediation guidance. Given the known exploitation in the wild, it is recommended to monitor official Microsoft communications for updates and apply any released patches promptly.

Weaknesses

CWE-59Unclassified weakness (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 11:40:48 UTC

Weaknesses

References

Related threats