CVE-2026-34350

Windows Storport Miniport Driver Denial of Service Vulnerability

CVE-2026-34350 is fixed in 2 products on 1 platform, first by KB5087539, released May 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

6.5

Important

Exploitation

None reported

Exploitation Unlikely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0078

56th percentile

<p>Null pointer dereference in Windows Storport Miniport Driver allows an unauthorized attacker to deny service over a network.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows Server 2025	26100.32860	KB5087539	May 12, 2026
Windows Server 2025	26100.32772	KB5087423	May 12, 2026
Windows Server 2025 (Server Core installation)	26100.32860	KB5087539	May 12, 2026
Windows Server 2025 (Server Core installation)	26100.32772	KB5087423	May 12, 2026

Details

Published
May 12, 2026
Weakness
NULL Pointer Dereference
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34350

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