CVE-2019-1385
Microsoft Windows AppX Deployment Extensions Privilege Escalation Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 13 June 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
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 Extensions Elevation of Privilege Vulnerability'.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.60% probability · 89th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 23 May 2022 · due 13 June 2022 · used in ransomware campaigns
- Weakness
- CWE-59
- Affected
- microsoft/windows 10 1709 · microsoft/windows 10 1803 · microsoft/windows 10 1809 · microsoft/windows 10 1903 · microsoft/windows server 2016 · microsoft/windows server 2019
- Source
- secure@microsoft.com
EPSS 3.6% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2019-1385
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1385Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-19-979/Third Party Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1385Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-19-979/Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1385US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.