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Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-72949

Severity CVSS v4.0:
Pending analysis
Type:
CWE-476 NULL Pointer Dereference
Publication date:
08/09/2026
Last modified:
21/09/2026

Description

Null pointer dereference in Windows SMB Server Network Transport Driver (srvnet.sys) allows an unauthorized attacker to deny service over a network.

Impact

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

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
7.50
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:* 10.0.22631.7582 (excluding)
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:* 10.0.22631.7582 (excluding)
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* 10.0.26100.9445 (excluding)
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:* 10.0.26100.9445 (excluding)
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:* 10.0.26200.9445 (excluding)
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:* 10.0.26200.9445 (excluding)
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:* 10.0.28000.2954 (excluding)
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:* 10.0.28000.2954 (excluding)
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:x64:* 10.0.20348.5622 (excluding)
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:* 10.0.26100.33438 (excluding)

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


References to Advisories, Solutions, and Tools