Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2015-1635

CVE-2015-1635CRITICAL

n/a n/a — Microsoft HTTP.sys

  AV  AC  PR  UI  S  C  I  A   CVSS     EPSS    %ile   KEV
   N   L   N   N  U  H  H  H    9.8   1.0000   100.0   YES

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Feb 17  Reserved by microsoft
  Apr 14  Published (CNA: microsoft)
  Feb 10  Added to CISA KEV, remediation due 2022-08-10

CWE-94 · CNA: microsoft · CVSS v3.1 · 8 references · KEV due August 10, 2022

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."

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
February 17, 2015	Reserved	Reserved by microsoft
April 14, 2015	Published	Published (CNA: microsoft)
February 10, 2022	KEV ADDED	Added to CISA KEV, remediation due 2022-08-10

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-94

References (8)

http://packetstormsecurity.com/files/131463/Microsoft-Windows-HTTP.sys-Proof-Of-Concept.html [x_refsource_MISC]
http://www.osvdb.org/120629 [vdb-entry, x_refsource_OSVDB]
http://www.securityfocus.com/bid/74013 [vdb-entry, x_refsource_BID]
http://www.securitytracker.com/id/1032109 [vdb-entry, x_refsource_SECTRACK]
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-034 [vendor-advisory, x_refsource_MS]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1635 [government-resource]
https://www.exploit-db.com/exploits/36773/ [exploit, x_refsource_EXPLOIT-DB]
https://www.exploit-db.com/exploits/36776/ [exploit, x_refsource_EXPLOIT-DB]

Authoritative record: CVE-2015-1635 at cve.org

Weaknesses: CWE-94

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2015-1635 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.