Name: CVE-2026-40405: NULL Pointer Dereference
Creator: Rapid7
Published: 2026-05-12T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-40405, CWE-476, CVSS 7.5, EPSS 0.01174

Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over a network.

CVSS Details

CVSS 3.1 Base Score: 7.5
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Microsoft Windows	—	2026-05 Cumulative Update for Microsoft Windows Server 2025, version 24H2 (KB5087539)2026-05 Cumulative Update for Microsoft Windows 11, version 25H2 (KB5089549)2026-05 Cumulative Update for Microsoft Windows 11, version 24H2 (KB5089549)2026-05 Cumulative Update for Microsoft Windows 11, version 26H1 (KB5089548)	May 12, 2026	May 12, 2026

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CVSS Details

Covered by Rapid7

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