CVE-2019-1385: Microsoft Windows AppX Deployment Extensions Privilege Escalation Vulnerability
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
A privilege escalation vulnerability exists when the Windows AppX Deployment Extensions improperly performs privilege management, resulting in access to system files.
CSIRTS triage
- What
- A privilege escalation vulnerability exists due to improper privilege management in Windows AppX Deployment Extensions.
- Who is affected
- Users of Microsoft Windows with AppX Deployment Extensions are affected.
- Urgency
- Remediation is critical as the vulnerability is actively exploited and has a high severity rating.
- Action
- Install the latest security updates from Microsoft.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2019-1385
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Exploitation confirmedCVE-2019-1385Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 88% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2019-1385 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Microsoft Windows AppX
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- criticalexploitedCVE-2019-1130: Microsoft Windows AppX Deployment Service Privilege Escalation Vulnerabilitycisa-kev · 2022-05-23
- criticalexploitedCVE-2019-1253: Microsoft Windows AppX Deployment Server Privilege Escalation Vulnerabilitycisa-kev · 2022-03-15
- criticalexploitedCVE-2019-1129: Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerabilitycisa-kev · 2022-03-15
- criticalexploitedCVE-2019-0841: Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerabilitycisa-kev · 2022-03-15
- criticalexploitedCVE-2019-1064: Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerabilitycisa-kev · 2022-03-15
- criticalexploitedCVE-2021-43890: Microsoft Windows AppX Installer Spoofing Vulnerabilitycisa-kev · 2021-12-15
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