What it is
CVE-2019-1064 is Windows Elevation of Privilege Vulnerability affecting Microsoft Windows 10 Version 1703 and 16 other products. An elevation of privilege vulnerability exists when Windows AppX Deployment Service...
Vulnerability report
Exploited in the wild
Confirmed confidence
In CISA KEV
CVE-2019-1064
Windows Elevation of Privilege Vulnerability
Microsoft / Windows 10 Version 1703 · affected before publication
- Severity
- CVSS 7.8 · High
- Confidence
- Confirmed
- Exploit status
- Exploited in the wild
- EPSS
- 6.9%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.
Who is affected?
Microsoft / Windows 10 Version 1703 affected before publication.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
Windows Elevation of Privilege Vulnerability
An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links. An attacker who successfully exploited this vulnerability could run processes in an elevated context. An attacker could then install programs; view, change or delete data.
To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The security update addresses the vulnerability by correcting how Windows AppX Deployment Service handles hard links.
Vendor
Product
Affected
Status
Microsoft
Windows 10 Version 1703
Before publication
Affected
Microsoft
Windows 10 Version 1803
Before publication
Affected
Microsoft
Windows Server, version 1803 (Server Core Installation)
Before publication
Affected
Microsoft
Windows 10 Version 1809
Before publication
Affected
Microsoft
Windows 10 Version 1809
Before publication
Affected
Microsoft
Windows Server 2019
Before publication
Affected
Microsoft
Windows Server 2019 (Server Core installation)
Before publication
Affected
Microsoft
Windows 10 Version 1709 for 32-bit Systems
Before publication
Affected
Microsoft
Windows 10 Version 1709
Before publication
Affected
Microsoft
Windows 10 Version 1903 for 32-bit Systems
Before publication
Affected
Microsoft
Windows 10 Version 1903 for x64-based Systems
Before publication
Affected
Microsoft
Windows 10 Version 1903 for ARM64-based Systems
Before publication
Affected
Microsoft
Windows Server, version 1903 (Server Core installation)
Before publication
Affected
Microsoft
Windows 10 Version 1607
Before publication
Affected
Microsoft
Windows Server 2016
Before publication
Affected
Microsoft
Windows Server 2016 (Server Core installation)
Before publication
Affected
- Published
- 12 Jun 2019
- Exploitation Reported
- 15 Mar 2022
- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
Tags
windows
cisa
microsoft
ransomware
malware
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2019-1064
- Windows Elevation of Privilege Vulnerability msrc.microsoft.com · Vendor Advisory https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1064
Exploitation evidence
Why KEV Intelligence marks this CVE as exploited
Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.
Exploited in the wild
CISA
Independent exploitation attestation added to the KEV Intelligence record.
Used in malware
CISA
Malware families have been linked to exploitation of this CVE.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2022-03-15 00:00 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- 0
- User-Agents
- 0
Raw values available in Pro and Enterprise.
Scanner coverage
No scanner integrations recorded yet.
Virtual patch status
No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Risk and context
Severity, weaknesses, and research context
CVSS v3.1
7.8
High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
EPSS
6.9%
Timeline
From disclosure to observed exploitation
-
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
First public exploitation report
Exploit observed in malware
-
CVE published
Vulnerability disclosed publicly
-
CVE ID reserved
Identifier reserved by the CNA
Pro API
Automate this intelligence
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
- Evidence confidence and provenance
- First-party sensor telemetry
- PoC and scanner references
- Affected versions and enrichment
- Automation-ready JSON delivery
GET /api/v2/pro/kevs/CVE-2019-1064
Free JSON includes basic KEV fields{
"cve_id": "CVE-2019-1064",
"confidence": "Confirmed",
"cvss_score": 7.8,
"cvss_estimated": false,
"epss_score": 0.06886,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}Early warning alerts
Get alerts on high-impact exploitation
Receive curator-selected alerts when exploitation activity warrants attention. Each alert includes the evidence and context needed to decide what requires attention now.