PatchTheCVECVE-2019-1385: Microsoft Windows AppX Deployment Extensions Privilege Escalation Vulnerability
CVE-2019-1385 is a high-severity flaw (CVSS 7.8) affecting windows 10 1709, windows 10 1803, windows 10 1809, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An elevation of privilege vulnerability exists when the Windows AppX Deployment Extensions improperly performs privilege management, resulting in access to system files.To exploit this vulnerability, an authenticated attacker would need to run a specially crafted application to elevate privileges.The security update addresses the vulnerability by correcting how AppX Deployment Extensions manages privileges., aka 'Windows AppX Deployment Extension
Why this priority
- High severity
- Exploited in the wild (CISA KEV)
- Used in ransomware campaigns
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.8 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 3.6% (top 11%) |
| CISA exploited list | Yes, fix due 2022-06-13, used in ransomware |
| Weakness | CWE-59 |
| Published | 2019-11-12 |
| Last modified | 2026-08-12 |
Last updated 2026-08-12 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Exploited Added to the CISA Known Exploited Vulnerabilities list
- Deadline CISA due date for US federal agencies to patch
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: 0x413x4/CVE-2019-1385
- GitHub PoC: klinix5/CVE-2019-1385
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2019-1385?
windows 10 1709: mitigate or apply the listed mitigation; windows 10 1803: mitigate or apply the listed mitigation; windows 10 1809: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2019-1385 being exploited?
Yes. CVE-2019-1385 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.
What does CVE-2019-1385 affect?
CVE-2019-1385 affects windows 10 1709, windows 10 1803, windows 10 1809. Severity is high (CVSS 7.8). An elevation of privilege vulnerability exists when the Windows AppX Deployment Extensions improperly performs privilege management, resulting in access to system files.To exploit this vulnerability, an authenticated attacker would need to
How urgent is CVE-2019-1385?
Priority 85/100. High severity; Exploited in the wild (CISA KEV); Used in ransomware campaigns; On your watchlist
Software pages
Windows vulnerabilities · Windows Server vulnerabilities
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