Vulnerability record

CVE-2015-1635

Microsoft HTTP.sys Remote Code Execution Vulnerability

Severity: CriticalExploitation: Exploitation confirmedCISA KEV
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run HTTP.sys, fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by Aug 10, 2022.

Patch status

Official fix available since

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

Description

HTTP.sys in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8, Windows 8.1, and Windows Server 2012 Gold and R2 allows remote attackers to execute arbitrary code via crafted HTTP requests, aka "HTTP.sys Remote Code Execution Vulnerability."

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

Products affected by this vulnerability, with versions and the source of each entry
ProductVendorSource
HTTP.sysMicrosoftKEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog. Version details have not been published yet.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2015-1635 scored CVSS 9.8: Microsoft HTTP.sys, Microsoft HTTP.sys Remote Code Execution Vulnerability

    CISA lists this as exploited in the wild. Unpatched HTTP.sys systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

  2. Patch releasedUpdateKEV

    Patch released for CVE-2015-1635: Microsoft HTTP.sys, Microsoft HTTP.sys Remote Code Execution Vulnerability

    An official fix is now available for Microsoft HTTP.sys. This vulnerability is being exploited, so apply it promptly.

    Basis: NVD patch reference

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References