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Windows TCP/IP CVE-2026-69761

| EUVDEUVD-2026-73612 HIGH
Use After Free (CWE-416)
2026-09-08 secure@microsoft.com GHSA-rh8r-xxm5-j6pq
7.1
CVSS 3.1 · Vendor: microsoft
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Severity by source

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

Network-reachable TCP/IP race condition requires authenticated low-privilege access and victim interaction; full kernel compromise warrants C:H/I:H/A:H with no scope change.

3.1 AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
4.0 AV:N/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/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
High
Availability
High

Lifecycle Timeline

4
Metadata Corrected
Sep 09, 2026 - 03:40 vuln.today
tag: Privilege Escalation added
Analysis Generated
Sep 09, 2026 - 03:13 vuln.today
Patch available
Sep 08, 2026 - 18:35 EUVD
CVE Published
Sep 08, 2026 - 18:19 nvd
HIGH 7.1

DescriptionCVE.org

Use after free in Windows TCP/IP allows an authorized attacker to elevate privileges over a network.

AnalysisAI

Use-after-free (CWE-416) in the Windows TCP/IP networking stack enables an authenticated, low-privileged attacker to escalate privileges to a higher trust level via a network-based attack path. The vulnerability affects a broad surface - Windows 10 through Windows 11 and Windows Server 2012 through 2025 - making the potential impact wide despite the elevated attack complexity (AC:H) and required user interaction (UI:R) constraints in the CVSS vector. …

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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 Exploitation requires the attacker to hold low-privilege authenticated access to the target network or system (PR:L - a standard domain user credential is sufficient). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The base CVSS score of 7.1 reflects a meaningful but constrained threat. … 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-released security updates corresponding to each Windows build. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, use endpoint detection and response (EDR) tools or System Center Configuration Manager (SCCM) to inventory all Windows 10, Windows 11, and Windows Server 2012 through 2025 systems across your organization. …

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CVE-2026-69761 vulnerability details – vuln.today

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