CVE-2026-88160: Microsoft Windows Search Component Elevation of Privilege Vulnerability

Published Oct 13, 2026
·
Updated

Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

Other sources

Microsoft Windows Search Component Elevation of Privilege Vulnerability

— Microsoft

Affected Software

30 affected componentsFixes available
Microsoft Windows Server 2025<10.0.26100.33650
10.0.26100.33650
Microsoft Windows 11=26H2
10.0.26300.9711
Microsoft Windows 11=26H2
10.0.26300.9711
Microsoft Windows 10=1607
10.0.14393.9612
Microsoft Windows 11=26H1
10.0.28000.3231
Microsoft Windows 10=1607
10.0.14393.9612
Microsoft Windows Server 2012 R2<6.3.9600.23470
6.3.9600.23470
Microsoft Windows Server 2012 R2<6.3.9600.23470
6.3.9600.23470
Microsoft Windows Server 2016<10.0.14393.9612
10.0.14393.9612
Microsoft Windows Server 2016<10.0.14393.9612
10.0.14393.9612
Microsoft Windows 11=23H2
10.0.22631.7652
Microsoft Windows 11=23H2
10.0.22631.7652
Microsoft Windows 11=24H2
10.0.26100.9711
Microsoft Windows 11=24H2
10.0.26100.9711
Microsoft Windows 11=26H1
10.0.28000.3231
Microsoft Windows 11=25H2
10.0.26200.9711
Microsoft Windows 10=1809
10.0.17763.9376
Microsoft Windows 10=22H2
10.0.19044.7807
Microsoft Windows 11=25H2
10.0.26200.9711
Microsoft Windows 10=22H2
10.0.19044.7807
Microsoft Windows 10=21H2
10.0.19044.7807
Microsoft Windows Server 2025<10.0.26100.33650
10.0.26100.33650
Microsoft Windows Server 2022<10.0.20348.5761
10.0.20348.5761
Microsoft Windows Server 2022<10.0.20348.5761
10.0.20348.5761
Microsoft Windows 10=21H2
10.0.19044.7807
Microsoft Windows 10=21H2
10.0.19044.7807
Microsoft Windows 10=22H2
10.0.19044.7807
Microsoft Windows 10=1809
10.0.17763.9376
Microsoft Windows Server 2019<10.0.17763.9376
10.0.17763.9376
Microsoft Windows Server 2019<10.0.17763.9376
10.0.17763.9376

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.26300.9711Patch KB5127648
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.26100.33650Patch KB5126646
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.28000.3231Patch KB5127646
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.14393.9612Patch KB5126868
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.3.9600.23470Patch KB5126836
  6. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.22631.7652Patch KB5126653
  7. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.26100.9711Patch KB5127648
  8. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.26200.9711Patch KB5127648
  9. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.17763.9376Patch KB5126651
  10. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19044.7807Patch KB5126657
  11. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.20348.5761Patch KB5126655

Event History

Oct 13, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·07:00 PM
Data Sourced
via MITRE·07:00 PM
DescriptionSeverity

Frequently Asked Questions

1

Who is exposed to this vulnerability?

Systems running the affected Microsoft Windows client or server products are exposed, including Windows 10, Windows 11, and the listed Windows Server versions. Exploitation is local rather than network-based.

2

What access does an attacker need to exploit it?

An attacker must already be authorized on the affected system and have local access. The available data indicates low privileges are sufficient, but exploitation has high attack complexity because it relies on a race condition.

3

What is the potential impact if exploitation succeeds?

A successful attacker can elevate privileges locally. The supplied severity vector indicates potential high impact to confidentiality, integrity, and availability.

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