CVE DATABASE / CVE-2015-1635
CVE-2015-1635
Microsoft HTTP.sys Remote Code Execution Vulnerability
CVSS 9.8 · CRITICAL
⚠ CISA KEV — ACTIVELY EXPLOITED
On the CISA KEV catalog
Confirmed exploited in the wild. Added 2022-02-10.
Federal remediation due 2022-08-10.
Required action: Apply updates per vendor instructions.
Summary
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 3.1 breakdown
| Base score | 9.8 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
Microsoft windows 7Microsoft windows 8Microsoft windows 8.1Microsoft windows server 2008Microsoft windows server 2012
Check this CVE live
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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
Data: NIST NVD + CISA KEV. NVD last modified 2026-04-22. Always verify against the vendor advisory before acting.