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Windows DNS CVE-2026-69672

| EUVDEUVD-2026-73608 MEDIUM
Use of Uninitialized Resource (CWE-908)
2026-09-08 secure@microsoft.com GHSA-c4vx-3v55-8jhq
5.5
CVSS 3.1 · Vendor: microsoft
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Severity by source

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

Local authenticated access with low privileges suffices to read uninitialized memory; no integrity or availability impact is present.

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

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

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

Lifecycle Timeline

3
Analysis Generated
Sep 09, 2026 - 06:40 vuln.today
Patch available
Sep 08, 2026 - 18:35 EUVD
CVE Published
Sep 08, 2026 - 18:19 cve.org
MEDIUM 5.5

DescriptionCVE.org

Use of uninitialized resource in Windows DNS allows an authorized attacker to disclose information locally.

AnalysisAI

Local information disclosure in the Windows DNS component affects multiple Microsoft Windows Server versions from 2012 through 2025. An authorized local attacker with low privileges can trigger an uninitialized resource condition (CWE-908) in the DNS service, potentially reading stale memory contents that may include DNS query data, internal server state, or other sensitive in-process information. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Exploit
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Execution
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Impact
technique details hidden

Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated local session on the target Windows Server system with at least low-privilege access (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 5.5 Medium rating reflects a local-only attack path (AV:L) requiring low user privileges (PR:L), substantially constraining the exploitable population compared to network-facing vulnerabilities. … 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 Microsoft's security update for the relevant platform via Windows Update or WSUS, targeting the following patched build floors: Windows Server 2012 → 6.2.9200.26349, Windows Server 2012 R2 → 6.3.9600.23397, Windows Server 2016 and Windows 10 1607 → 10.0.14393.9512, Windows Server 2019 and Windows 10 1809 → 10.0.17763.9245, Windows Server 2022 → 10.0.20348.5622, Windows Server 2025 → 10.0.26100.33438. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-69672 vulnerability details – vuln.today

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