CVE-2015-1635

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Summary

CVECVE-2015-1635
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2015-04-14 20:59:01 UTC
Updated2026-04-22 16:42:38 UTC
DescriptionHTTP.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."

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.943100000 probability, percentile 0.999480000 (date 2026-04-25)

CISA KEV: Listed on 2022-02-10; due 2022-08-10; ransomware use Unknown

Problem Types: CWE-94 | n/a | CWE-94 CWE-94 Improper Control of Generation of Code ('Code Injection')

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary10AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:L/Au:N/C:C/I:C/A:C

CISA Known Exploited Vulnerability

VendorMicrosoft
ProductHTTP.sys
NameMicrosoft HTTP.sys Remote Code Execution Vulnerability
Required ActionApply updates per vendor instructions.
Noteshttps://nvd.nist.gov/vuln/detail/CVE-2015-1635

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Microsoft Windows 7 - sp1 All All
Operating System Microsoft Windows 8 - All All All
Operating System Microsoft Windows 8.1 - All All All
Operating System Microsoft Windows Server 2008 r2 sp1 All All
Operating System Microsoft Windows Server 2008 r2 sp1 All All
Operating System Microsoft Windows Server 2012 - All All All
Operating System Microsoft Windows Server 2012 r2 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Microsoft Security Bulletin MS15-034 - Critical | Microsoft Docs af854a3a-2127-422b-91ae-364da2661108 docs.microsoft.com Patch, Vendor Advisory
Microsoft Windows HTTP Protocol Stack CVE-2015-1635 Remote Code Execution Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry, Broken Link
www.osvdb.org/120629 af854a3a-2127-422b-91ae-364da2661108 www.osvdb.org Broken Link
Windows HTTP Protocol Stack ('HTTP.sys') Parsing Error Lets Remote Users Execute Arbitrary Code - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry, Broken Link
www.cisa.gov/known-exploited-vulnerabilities-catalog 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.cisa.gov US Government Resource
MS Windows HTTP.sys - HTTP Request Parsing DoS MS15-034 af854a3a-2127-422b-91ae-364da2661108 www.exploit-db.com Exploit, Third Party Advisory, VDB Entry
Microsoft Window - HTTP.sys PoC MS15-034 af854a3a-2127-422b-91ae-364da2661108 www.exploit-db.com Exploit, Third Party Advisory, VDB Entry
Microsoft Windows HTTP.sys Proof Of Concept ≈ Packet Storm af854a3a-2127-422b-91ae-364da2661108 packetstormsecurity.com Exploit, Third Party Advisory, VDB Entry
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Additional Advisory Data

SourceTimeEvent
ADP2022-02-10T00:00:00.000ZCVE-2015-1635 added to CISA KEV
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