EUVD-2026-73481
GHSA-c3qm-624h-cp2j
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Network-reachable SMB requires a valid low-privilege authenticated session (PR:L); impact is availability-only resource exhaustion with no confidentiality or integrity consequence.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Allocation of resources without limits or throttling in Windows SMB Server allows an authorized attacker to deny service over a network.
AnalysisAI
Unthrottled resource allocation in the Windows SMB Server component (CWE-770) allows a low-privilege authenticated attacker to exhaust server resources over a network connection, causing a denial of service. Affected platforms span Windows 10 (21H2, 22H2), Windows 11 (23H2 through 26H1), Windows Server 2022, and Windows Server 2025 across both standard and Server Core installations. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network-level access to TCP port 445 on the target Windows host and at minimum a low-privilege authenticated session (PR:L per CVSS) - for example, a valid domain user account or any identity capable of completing SMB authentication. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 6.5 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) reflects an accurate characterization: the attack is network-reachable, requires no interaction, and demands only a low-privilege credential such as a domain user account. … 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 CVE-2026-69374 via Windows Update, WSUS, or Microsoft Update Catalog; the authoritative advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69374 maps each affected OS version to its specific KB article and target build number. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same technique Denial Of Service
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External POC / Exploit Code
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