CVE-2026-33096
Received Received - Intake
Out-of-Bounds Read in Windows HTTP.sys Causes Remote DoS

Publication date: 2026-04-14

Last updated on: 2026-04-17

Assigner: Microsoft Corporation

Description
Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-04-14
Last Modified
2026-04-17
Generated
2026-06-16
AI Q&A
2026-04-14
EPSS Evaluated
2026-06-15
NVD
CVE-2026-33096
EUVD
EUVD-2026-22617
Affected Vendors & Products
Showing 11 associated CPEs
Vendor Product Version / Range
microsoft windows_11_23h2 to 10.0.22631.6936 (exc)
microsoft windows_11_23h2 to 10.0.22631.6936 (exc)
microsoft windows_11_24h2 to 10.0.26100.8246 (exc)
microsoft windows_11_24h2 to 10.0.26100.8246 (exc)
microsoft windows_11_25h2 to 10.0.26200.8246 (exc)
microsoft windows_11_25h2 to 10.0.26200.8246 (exc)
microsoft windows_11_26h1 to 10.0.28000.1836 (exc)
microsoft windows_11_26h1 to 10.0.28000.1836 (exc)
microsoft windows_server_2022 to 10.0.20348.5020 (exc)
microsoft windows_server_2022_23h2 to 10.0.25398.2274 (exc)
microsoft windows_server_2025 to 10.0.26100.32690 (exc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability is an out-of-bounds read in the Windows HTTP.sys component. It allows an unauthorized attacker to cause a denial of service (DoS) over a network by exploiting this flaw.

Impact Analysis

The impact of this vulnerability is that an attacker can cause a denial of service condition remotely without any privileges or user interaction. This means your system or service relying on Windows HTTP.sys could become unavailable or unresponsive due to this attack.

Compliance Impact

The vulnerability allows an unauthorized attacker to cause a denial of service over a network by exploiting an out-of-bounds read in Windows HTTP.sys.

While this can impact availability, the provided information does not specify any direct effects on confidentiality or integrity of data, which are critical for compliance with standards like GDPR or HIPAA.

Therefore, based on the available data, this vulnerability primarily affects service availability but does not explicitly indicate a compliance impact related to data protection regulations.

Mitigation Strategies

The vulnerability allows an unauthorized attacker to cause a denial of service over a network via an out-of-bounds read in Windows HTTP.sys.

To mitigate this vulnerability, it is recommended to apply the security updates provided by Microsoft as soon as possible.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-33096. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart