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CVE-2026-72949

Last refreshed2026-10-03

Status: UPDATED  |  Advisory ID: CVE-2026-72949

Key Details

CVECVE-2026-72949
CVSS Score / Version7.5 (High) / CVSS v3.1
Updated2026-09-21
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Proseattack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is none; integrity impact is none; availability impact is high.
Affected productssee table below
Classified asCWE-476 (NULL Pointer Dereference)

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
MicrosoftWindows 11 (version 23H2)
MicrosoftWindows 11 (version 24H2)
MicrosoftWindows 11 (version 25H2)
MicrosoftWindows 11 (version 26H1)
MicrosoftWindows Server 2025
MicrosoftWindows Server 2022
MicrosoftWindows 11 version 23H2
MicrosoftWindows 11 Version 24H2
MicrosoftWindows 11 Version 25H2
MicrosoftWindows 11 version 26H1
MicrosoftWindows Server 2025 (Server Core installation)
SubsystemsCore Infrastructure, EWS Workstation Delivery/Virtualization
SectorsAll Sectors

What to Know

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

What to Do

Monitor Microsoft's web page for any future patch releases. See vendor advisory link below.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-72949
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-72949
Vendor advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72949

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