CVE-2015-1635
CRITICALCISA KEVEPSS 100th pctlDescription
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."
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
Microsoft HTTP.sys Remote Code Execution Vulnerability
Microsoft HTTP protocol stack (HTTP.sys) contains a vulnerability that allows for remote code execution.
Apply updates per vendor instructions.
Remediation due: 2022-08-10
References
- http://packetstormsecurity.com/files/131463/Microsoft-Windows-HTTP.sys-Proof-Of-Concept.html
- http://www.osvdb.org/120629
- http://www.securityfocus.com/bid/74013
- http://www.securitytracker.com/id/1032109
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-034
- https://www.exploit-db.com/exploits/36773/
- https://www.exploit-db.com/exploits/36776/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1635
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-22.