Important CVSS 7.8 EPSS 0.00821 2020-06 archive

Executive Summary

An elevation of privilege vulnerability exists when the Windows Feedback Hub improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. To exploit this vulnerability, an attacker would first have to log on to the system with Windows Mixed Reality installed. An attacker could then run a specially crafted application to take control of an affected system. The security update addresses the vulnerability by correcting how the Feedback Hub handles objects in memory.

Overview

7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Elevation of Privilege
Released Jun 9 2020
Last Updated Jun 9 2020
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00821 — 0.52436 percentile
NVD CVSS 7.8 HIGH — matches MSRC

CVSS Vector

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
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.0

EPSS Score

0.00821
probability of exploitation in the next 30 days
0.52436 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

8 affected products
Product KB Article Severity Impact Restart Required
Windows 10 Version 1709 for x64-based Systems 4561602 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1803 for x64-based Systems 4561621 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1809 for HoloLens 4561608 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1809 for x64-based Systems 4561608 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1903 for HoloLens 4560960 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1903 for x64-based Systems 4560960 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 2004 for HoloLens 4557957 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 2004 for x64-based Systems 4557957 (Security Update) Important Elevation of Privilege Yes

Patches

5 patches
Article Type Restart
4561602 Security Update Yes
4561621 Security Update Yes
4561608 Security Update Yes
4560960 Security Update Yes
4557957 Security Update Yes

Known Exploits

Acknowledgments