# CVE-2016-0150: HTTP.sys Denial of Service Vulnerability

CVE-2016-0150 is fixed in 4 products on 1 platform, first by KB3147458, released April 12, 2016. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2016-0150
- Priority: High
- CVSS: n/a (Important)
- EPSS: 0.2801
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Unlikely
- Published: Apr 12, 2016
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2016-0150

## Description

<p>A denial of service vulnerability exists in the HTTP 2.0 protocol stack (HTTP.sys) when HTTP.sys improperly parses specially crafted HTTP 2.0 requests. An attacker who successfully exploited the vulnerability could create a denial of service condition, causing the target system to become unresponsive.</p> <p>To exploit this vulnerability, an attacker could send a specially crafted HTTP packet to a target system, causing the affected system to become nonresponsive.</p> <p>The update addresses the vulnerability by modifying how the Windows HTTP protocol stack handles HTTP 2.0 requests. Note that the denial of service vulnerability would not allow an attacker to execute code or to elevate user rights.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1511 for 32-bit Systems | 10586.218 | [KB3147458](https://patchblox.com/security/data/fix/microsoft/kb3147458.md) | Apr 12, 2016 |
| Microsoft | Windows 10 Version 1511 for x64-based Systems | 10586.218 | [KB3147458](https://patchblox.com/security/data/fix/microsoft/kb3147458.md) | Apr 12, 2016 |
| Microsoft | Windows 10 for 32-bit Systems |  | [KB3147461](https://patchblox.com/security/data/fix/microsoft/kb3147461.md) | Apr 12, 2016 |
| Microsoft | Windows 10 for x64-based Systems |  | [KB3147461](https://patchblox.com/security/data/fix/microsoft/kb3147461.md) | Apr 12, 2016 |

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Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo