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CVE-2026-69478

Windows Device Association Service Elevation of Privilege Vulnerability

Published: Sep 8, 2026Updated: Sep 9, 2026 Sources: CVE List NVDCWE-122

Description

Heap-based buffer overflow in Windows Device Association Service allows an authorized attacker to elevate privileges locally.

In plain language

AI Act now

CVE-2026-69478 is a Windows local security bug that could let an attacker raise their access level on affected Windows 10/11 and Windows Server systems; you should act because it’s a serious privilege-escalation issue and fixes are available.

Executive summary

CVE-2026-69478 is a Windows Device Association Service elevation of privilege issue (CWE-122) where a heap-based buffer overflow can be triggered by an authorized local attacker to gain higher privileges; fixed Windows builds are available for each supported release listed.

If affected, business impact
Full takeover of affected accountsAbility to install malicious softwareData theft using elevated accessService disruption from system compromise

What to do now

  1. Check whether you run any of the affected systems: Windows 10, Windows 11, or Windows Server (2016/2019/2022/2025).
  2. Verify your installed Windows build/update level.
  3. Upgrade to the fixed Windows version for your exact release:
    • Windows 10 fixed in 10.0.14393.9512 (or 10.0.17763.9245, 10.0.19044.7725, or 10.0.19045.7725)
    • Windows 11 fixed in 10.0.22631.7582 (or 10.0.26100.9445, 10.0.26200.9445, or 10.0.28000.2954)
    • Windows Server 2016 fixed in 10.0.14393.9512
    • Windows Server 2019 fixed in 10.0.17763.9245
    • Windows Server 2022 fixed in 10.0.20348.5622
    • Windows Server 2025 fixed in 10.0.26100.33438
  4. If you can’t patch right away, limit local access to those devices (reduce who can log on locally) and treat any suspicious local activity as a potential security incident until patched.
Usually a quick update

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
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 10 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

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

3

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