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CVE-2026-69498

Windows Win32k Elevation of Privilege Vulnerability

Published: Sep 8, 2026Updated: Sep 9, 2026 Sources: CVE List NVDCWE-416

Description

Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.

In plain language

AI Act now

This is a Windows local privilege-escalation bug that can let someone with access to your device gain higher permissions; small businesses should patch soon, especially on Windows 10/11 and Windows Server systems.

Executive summary

CVE-2026-69498 is a local elevation of privilege in the Windows Win32k subsystem, triggered via a use-after-free condition that can allow an authorized attacker to gain higher privileges; Microsoft provides fixed versions for supported Windows 10/11 and Windows Server releases.

If affected, business impact
Full user account compromiseServer control and disruptionMalware persistence via admin accessData access under elevated privileges

What to do now

  1. Check which Windows 10, Windows 11, or Windows Server version/build your devices are running.
  2. Compare your current Windows build number against the Microsoft fixed versions below.
  3. Update any affected devices to at least: Windows 10 10.0.17763.9245 or 10.0.19044.7725 or 10.0.19045.7725; Windows 11 10.0.22631.7582 or 10.0.26100.9445 or 10.0.26200.9445 or 10.0.28000.2954; Windows Server 2019 10.0.17763.9245; Windows Server 2022 10.0.20348.5622; Windows Server 2025 10.0.26100.33438.
  4. If you can’t patch immediately, restrict who can log on to the affected machines and reduce exposure of administrator accounts until updates are applied.
Patch / advisory Usually a quick update

CVSS Vector Breakdown

AV:LAC:HPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

Affected Products

and 8 more affected products View all →

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

3

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