CVE-2026-88235: Servicing Stack Updates Elevation of Privilege Vulnerability
Published Nov 10, 2026
·Updated
Servicing Stack Updates Elevation of Privilege Vulnerability
Other sources
Unintended proxy or intermediary ('confused deputy') in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.
— Microsoft
Affected Software
18 affected componentsFixes available
Microsoft Windows Server 2022<10.0.20348.5870
10.0.20348.5870
Microsoft Windows 11=23H2, >=10.0.22631<10.0.22631.7711
10.0.22631.7711
Microsoft Windows 10=21H2, >=10.0.19044<10.0.19044.7846
10.0.19044.7846
Microsoft Windows 10=22H2, >=10.0.19045<10.0.19045.7846
10.0.19045.7846
Microsoft Windows 10=22H2, >=10.0.19045<10.0.19045.7846
10.0.19045.7846
Microsoft Windows 10=22H2, >=10.0.19045<10.0.19045.7846
10.0.19045.7846
Microsoft Windows Server 2022<10.0.20348.5870
10.0.20348.5870
Microsoft Windows 11=23H2, >=10.0.22631<10.0.22631.7711
10.0.22631.7711
Microsoft Windows 10=21H2, >=10.0.19044<10.0.19044.7846
10.0.19044.7846
Microsoft Windows 10=21H2, >=10.0.19044<10.0.19044.7846
10.0.19044.7846
Microsoft Windows Server 2019<10.0.17763.9487
10.0.17763.9487
Microsoft Windows 10=1809, >=10.0.17763<10.0.17763.9487
10.0.17763.9487
Microsoft Windows Server 2019<10.0.17763.9487
10.0.17763.9487
Microsoft Windows Server 2016<10.0.14393.9681
10.0.14393.9681
Microsoft Windows 10=1809, >=10.0.17763<10.0.17763.9487
10.0.17763.9487
Microsoft Windows Server 2016<10.0.14393.9681
10.0.14393.9681
Microsoft Windows 10=1607, >=10.0.14393<10.0.14393.9681
10.0.14393.9681
Microsoft Windows 10=1607, >=10.0.14393<10.0.14393.9681
10.0.14393.9681
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5870Patch KB5131090 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7711Patch KB5131087 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7846Patch KB5131096 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19045.7846Patch KB5131096 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9487Patch KB5131085 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9681Patch KB5131083
Event History
Nov 10, 2026
CVE Published
via Microsoft·04:00 PM
Data Sourced
via Microsoft·04:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·04:00 PM
Affected Software
CVE Published
via MITRE·06:15 PM
Data Sourced
via MITRE·06:15 PM
DescriptionSeverity
Data Sourced
via NVD·07:21 PM
DescriptionSeverityWeakness