OnlyPatch
Windows ALPC

CVE-2022-41100 — Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability

Important CVSS 7.8 EPSS 0.00298 2022-11 archive

Executive Summary

None

Overview

7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Elevation of Privilege
Released Nov 8 2022
Last Updated Nov 8 2022
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00298 — 0.22014 percentile
NVD CVSS 7.8 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Changed
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.8

EPSS Score

0.00298
probability of exploitation in the next 30 days
0.22014 percentile - updated 2026-07-25
View on FIRST.org

Affected Products

27 affected products
Product KB Article Severity Impact Restart Required
Windows 10 for 32-bit Systems 5019970 (Security Update) Important Elevation of Privilege Yes
Windows 10 for x64-based Systems 5019970 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1607 for 32-bit Systems 5019964 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1607 for x64-based Systems 5019964 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1809 for 32-bit Systems 5019966 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1809 for ARM64-based Systems 5019966 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 1809 for x64-based Systems 5019966 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 20H2 for 32-bit Systems 5019959 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 20H2 for ARM64-based Systems 5019959 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 21H1 for 32-bit Systems 5019959 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 21H1 for ARM64-based Systems 5019959 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 21H1 for x64-based Systems 5019959 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 21H2 for 32-bit Systems 5019959 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 21H2 for ARM64-based Systems 5019959 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 21H2 for x64-based Systems 5019959 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 22H2 for 32-bit Systems 5019959 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 22H2 for ARM64-based Systems 5019959 (Security Update) Important Elevation of Privilege Yes
Windows 10 Version 22H2 for x64-based Systems 5019959 (Security Update) Important Elevation of Privilege Yes
Windows 11 version 21H2 for ARM64-based Systems 5019961 (Security Update) Important Elevation of Privilege Yes
Windows 11 version 21H2 for x64-based Systems 5019961 (Security Update) Important Elevation of Privilege Yes
Windows 11 Version 22H2 for ARM64-based Systems 5019980 (Security Update) Important Elevation of Privilege Yes
Windows 11 Version 22H2 for x64-based Systems 5019980 (Security Update) Important Elevation of Privilege Yes
Windows 8.1 for 32-bit systems 5020023 (Monthly Rollup) 5020010 (Security Only) Important Elevation of Privilege 5018474 Base: 7.8 Temporal: 6.8 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20671 6.3.9600.20670 Yes 5020023 5020010 Windows 8.1 for x64-based systems 5020023 (Monthly Rollup) 5020010 (Security Only) Important Elevation of Privilege 5018474 Base: 7.8 Temporal: 6.8 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20671 6.3.9600.20670 Yes 5020023 5020010 Windows RT 8.1 5020010 (Security Only) Important Elevation of Privilege Yes
Windows Server 2012 R2 5020023 (Monthly Rollup) 5020010 (Security Only) Important Elevation of Privilege 5018474 Base: 7.8 Temporal: 6.8 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20671 6.3.9600.20670 Yes 5020023 5020010 Windows Server 2012 R2 (Server Core installation) 5020023 (Monthly Rollup) 5020010 (Security Only) Important Elevation of Privilege 5018474 Base: 7.8 Temporal: 6.8 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20671 6.3.9600.20670 Yes 5020023 5020010 Windows Server 2016 5019964 (Security Update) Important Elevation of Privilege Yes
Windows Server 2016 (Server Core installation) 5019964 (Security Update) Important Elevation of Privilege Yes
Windows Server 2019 5019966 (Security Update) Important Elevation of Privilege Yes
Windows Server 2019 (Server Core installation) 5019966 (Security Update) Important Elevation of Privilege Yes

Patches

7 patches
Article Type Restart
5019970 Security Update Yes
5019964 Security Update Yes
5019966 Security Update Yes
5019959 Security Update Yes
5019961 Security Update Yes
5019980 Security Update Yes
5020010 Security Only Yes

Known Exploits

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