Important CVSS 7.8 EPSS 0.25141 2019-01 archive

Executive Summary

An elevation of privilege vulnerability exists when the Windows Data Sharing Service improperly handles file operations. An attacker who successfully exploited this vulnerability could run processes in an elevated context. An attacker could exploit this vulnerability by running a specially crafted application on the victim system. The update addresses the vulnerability by correcting the way the Windows Data Sharing Service handles file operations.

Overview

7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
Category Elevation of Privilege
Released Jan 8 2019
Last Updated Jan 8 2019
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.25141 — 0.97657 percentile

CVSS Vector

ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
Temporal Score: 7.8

EPSS Score

0.25141
probability of exploitation in the next 30 days
0.97657 percentile - updated 2026-06-20
View on FIRST.org

Affected Products

21 affected products
Product KB Article Severity Impact Restart Required
Windows 10 for 32-bit Systems 4480962 (Security Update) Important Elevation of Privilege Yes
Windows 10 for x64-based Systems 4480962 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1607 for 32-bit Systems 4480961 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1607 for x64-based Systems 4480961 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1703 for 32-bit Systems 4480973 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1703 for x64-based Systems 4480973 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1709 for 32-bit Systems 4480978 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1709 for ARM64-based Systems 4480978 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1709 for x64-based Systems 4480978 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1803 for 32-bit Systems 4480966 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1803 for ARM64-based Systems 4480966 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1803 for x64-based Systems 4480966 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1809 for 32-bit Systems 4480116 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1809 for ARM64-based Systems 4480116 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1809 for x64-based Systems 4480116 (Security Update) Important Elevation of Privilege Yes
Windows Server 2016 4480961 (Security Update) Important Elevation of Privilege Yes
Windows Server 2016 (Server Core installation) 4480961 (Security Update) Important Elevation of Privilege Yes
Windows Server 2019 4480116 (Security Update) Important Elevation of Privilege Yes
Windows Server 2019 (Server Core installation) 4480116 (Security Update) Important Elevation of Privilege Yes
Windows Server, version 1709 (Server Core Installation) 4480978 (Security Update) Important Elevation of Privilege Yes
Windows Server, version 1803 (Server Core Installation) 4480966 (Security Update) Important Elevation of Privilege Yes

Patches

6 patches
Article Type Restart
4480962 Security Update Yes
4480961 Security Update Yes
4480973 Security Update Yes
4480978 Security Update Yes
4480966 Security Update Yes
4480116 Security Update Yes

Known Exploits

Acknowledgments