7.8
High
CVE-2019-1253 Microsoft Windows AppX Deployment Server Privilege Escalation Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply updates per vendor instructions.
Ransomware campaigns
Known to be used
Weakness
CWE-59
Description
An elevation of privilege vulnerability exists when the Windows AppX Deployment Server improperly handles junctions.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-1215, CVE-2019-1278, CVE-2019-1303.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows | Versions not published | |
| Windows Server | 2019 | No fix stated |
| Windows 10 Version 1903 for 32-bit Systems | Versions not published | |
| Windows 10 Version 1903 for x64-based Systems | Versions not published | |
| Windows 10 Version 1903 for ARM64-based Systems | Versions not published | |
| Windows Server, version 1903 (Server Core installation) | Versions not published |
Other CVEs of Windows
The 829 CVEs of Windows →
CVE-2025-59033
The Microsoft vulnerable driver block list is implemented as Windows Defender Application Control (WDAC) policy
7.4
High
CVE-2022-50238
The on-endpoint Microsoft vulnerable driver blocklist is not fully synchronized with the online Microsoft recommended…
7.4
High
CVE-2025-9491
Microsoft Windows LNK File UI Misrepresentation Remote Code Execution Vulnerability
7.0
High
CVE-2022-40733
An access violation vulnerability exists in the DirectComposition functionality win32kbase.sys driver version…
5.0
Medium