EXPOSURES › CVE-2019-1385
CVE-2019-1385
CRITICAL ⌖ ON CISA KEV · EXPLOITEDA Microsoft Windows vulnerability allowed privilege escalation via improper privilege management in AppX deployments, actively exploited and linked to ransomware activity.
CVE-2019-1385, a privilege escalation vulnerability in Windows AppX Deployment Extensions, enabled unauthorized access to system files. This failure exposes DIB organizations to potential ransomware attacks and compliance violations (NIST 800-171 controls 3.a, 3.b, 4.d). Ensure all systems are patched and review AppX deployment configurations.
Shame score — The vulnerability's active exploitation by ransomware groups highlights a significant failure in Microsoft's privilege management implementation and a delayed response.
▸ RECOMMENDED ACTION Actively exploited (CISA KEV) — remediate now, ahead of your normal patch cycle.
A privilege escalation vulnerability exists when the Windows AppX Deployment Extensions improperly performs privilege management, resulting in access to system files.
| PRODUCT | STATUS |
|---|---|
| Azure Commercial Cloud Microsoft |
Authorized |
| Azure Government (includes Dynamics 365) Microsoft |
Authorized |
| Microsoft Office 365 GCC High Microsoft |
In Process |
| Office 365 Multi-Tenant & Supporting Services Microsoft |
Authorized |