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Windows Overlay Filter CVE-2026-69474

| EUVDEUVD-2026-73515 MEDIUM
Buffer Over-read (CWE-126)
2026-09-08 secure@microsoft.com GHSA-2j6j-349h-27f4
4.8
CVSS 3.1 · Vendor: microsoft
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Severity by source

Vendor (microsoft) PRIMARY
4.8 MEDIUM
AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
vuln.today AI
4.8 MEDIUM

UAF is network-reachable with race-condition complexity (AC:H), requires authenticated low-privilege user (PR:L) and victim interaction (UI:R), with confidentiality-only impact.

3.1 AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
4.0 AV:N/AC:H/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

5
Metadata Corrected
Sep 09, 2026 - 08:40 vuln.today
tag: Denial Of Service removed
Metadata Corrected
Sep 09, 2026 - 08:40 vuln.today
tag: Buffer Overflow removed
Analysis Generated
Sep 09, 2026 - 08:30 vuln.today
Patch available
Sep 08, 2026 - 18:35 EUVD
CVE Published
Sep 08, 2026 - 18:19 cve.org
MEDIUM 4.8

DescriptionCVE.org

Use after free in Windows Overlay Filter allows an authorized attacker to disclose information over a network.

AnalysisAI

Use-after-free in the Windows Overlay Filter kernel driver exposes stale freed memory to authenticated low-privilege attackers capable of reaching the target over a network. Affected builds span Windows 10 (1607 through 22H2), Windows 11 (23H2 through 26H1), and Windows Server 2012 R2 through Server 2025, representing virtually the entire supported Microsoft Windows ecosystem. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation The attacker must hold a valid low-privilege account on the target system or domain (PR:L). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 4.8 Medium (AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N) correctly positions this as a moderate-priority item. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the Microsoft security update for the applicable Windows version via Windows Update, WSUS, or Microsoft Update Catalog, referencing the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69474. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-69474 vulnerability details – vuln.today

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