Vulnerability Intelligence Report
Microsoft Update Notification Manager Privilege Escalation Vulnerability
CVE-2020-0638
An elevation of privilege vulnerability exists in the way the Update Notification Manager handles files.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Update Notification Manager Elevation of Privilege Vulnerability'.
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
7.8
HIGH
Exploitability:1.9
Impact Score:5.9
EPSS Probability:3.04%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-59 ↗CWE-59 Improper Link Resolution Before File Access ('Link Following')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Windows | 10 Version 1709 for 32-bit Systems (affected), 10 Version 1803 for 32-bit Systems (affected), 10 Version 1809 for ARM64-based Systems (affected), 10 Version 1803 for x64-based Systems (affected), 10 Version 1709 for ARM64-based Systems (affected), 10 Version 1709 for x64-based Systems (affected), 10 Version 1803 for ARM64-based Systems (affected), 10 Version 1809 for 32-bit Systems (affected), 10 Version 1809 for x64-based Systems (affected) |
| Microsoft | Windows 10 Version 1903 for ARM64-based Systems | unspecified (affected) |
| Microsoft | Windows 10 Version 1903 for 32-bit Systems | unspecified (affected) |
| Microsoft | Windows 10 Version 1903 for x64-based Systems | unspecified (affected) |
| Microsoft | Windows Server | 2019 (affected), 2019 (Core installation) (affected), version 1803 (Core Installation) (affected) |
| Microsoft | Windows Server, version 1903 (Server Core installation) | unspecified (affected) |
| Microsoft | Windows 10 Version 1909 for 32-bit Systems | unspecified (affected) |
| Microsoft | Windows 10 Version 1909 for x64-based Systems | unspecified (affected) |
| Microsoft | Windows Server, version 1909 (Server Core installation) | unspecified (affected) |
| Microsoft | Windows 10 Version 1909 for ARM64-based Systems | unspecified (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2019-11-04T00:00:00 |
| Published | 2020-01-14T23:11:35 |
| Last Updated | 2026-08-12T03:56:03 |
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