CVE-2015-1635
Microsoft HTTP.sys Remote Code Execution Vulnerability
IN CISA KEV
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."
- Vendor
- Microsoft
- Product
- HTTP.sys
- CVSS 3.1
- 9.8 (critical), scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-94
- Published
- 2015-04-14
- NVD modified
- 2026-06-17
- NVD status
- Analyzed
CISA KEV
- Date added
- 2022-02-10
- Due date
- 2022-08-10
- Ransomware use
- Unknown
- Required action
- Apply updates per vendor instructions.
EPSS
100% chance of exploitation in the next 30 days (percentile 99th)
FIRST EPSS, updated 17 Oct 2026. About EPSS
CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.
References
- www.osvdb.org (Broken Link)
- www.securityfocus.com (Broken Link, Third Party Advisory, VDB Entry)
- www.securitytracker.com (Broken Link, Third Party Advisory, VDB Entry)
- docs.microsoft.com (Patch, Vendor Advisory)
- www.osvdb.org (Broken Link)
- www.securityfocus.com (Broken Link, Third Party Advisory, VDB Entry)
- www.securitytracker.com (Broken Link, Third Party Advisory, VDB Entry)
- docs.microsoft.com (Patch, Vendor Advisory)
- www.cisa.gov (US Government Resource)
Data last updated 18 Oct 2026. Sources: NVD API 2.0, CISA KEV catalog, FIRST EPSS. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.