CVE-2026-40405

HIGH EPSS 60.8%
Published May 12, 20261mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published May 12, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

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

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
60.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 7

VendorProductVersionRange
microsoftwindows_11_24h2* <10.0.26100.8390
microsoftwindows_11_24h2* <10.0.26100.8390
microsoftwindows_11_25h2* <10.0.26200.8390
microsoftwindows_11_25h2* <10.0.26200.8390
microsoftwindows_11_26h1* <10.0.28000.2113
microsoftwindows_11_26h1* <10.0.28000.2113
microsoftwindows_server_2025* <10.0.26100.32772

References 1

  • msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40405
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.