Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2026-40414

Severity CVSS v4.0:
Pending analysis
Type:
CWE-476 NULL Pointer Dereference
Publication date:
12/05/2026
Last modified:
15/05/2026

Description

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

Impact

Vector 3.x
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.40 HIGH
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.40
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* 10.0.14393.9140 (excluding)
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* 10.0.17763.8755 (excluding)
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:* 10.0.19044.7291 (excluding)
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:* 10.0.19045.7291 (excluding)
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:* 10.0.22631.7079 (excluding)
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:* 10.0.22631.7079 (excluding)
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* 10.0.26100.8390 (excluding)
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:* 10.0.26100.8390 (excluding)
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:* 10.0.26200.8390 (excluding)
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:* 10.0.26200.8390 (excluding)
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:* 10.0.28000.2113 (excluding)
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:* 10.0.28000.2113 (excluding)
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* 10.0.14393.9140 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools