CVE-2026-33096

Published: Apr 14, 2026Modified: Apr 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: secure@microsoft.com (Secondary)

Description

Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.

Affected (11)

Products: Microsoft: Windows 11 23h2, Windows 11 24h2, Windows 11 25h2, Windows 11 26h1, Windows Server 2022, Windows Server 2022 23h2, Windows Server 2025

7 products

Windows 11 23h2

Windows 11 24h2

Windows 11 25h2

Windows 11 26h1

Windows Server 2022

Windows Server 2022 23h2

Windows Server 2025

Configuration A

11 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 11 23h2	Before 10.0.22631.6936
Microsoft Windows 11 23h2	Before 10.0.22631.6936
Microsoft Windows 11 24h2	Before 10.0.26100.8246
Microsoft Windows 11 24h2	Before 10.0.26100.8246
Microsoft Windows 11 25h2	Before 10.0.26200.8246
Microsoft Windows 11 25h2	Before 10.0.26200.8246
Microsoft Windows 11 26h1	Before 10.0.28000.1836
Microsoft Windows 11 26h1	Before 10.0.28000.1836
Microsoft Windows Server 2022	Before 10.0.20348.5020
Microsoft Windows Server 2022 23h2	Before 10.0.25398.2274
Microsoft Windows Server 2025	Before 10.0.26100.32690

Related CWEs

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33096

Source: secure@microsoft.com

MitigationVendor Advisory

Timeline

No history available yet.