CVE-2015-1635

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 1.000 · 100 %ileexploit · functionalEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 17 exploits · functional

Likely / severe?

100.0% (100th) EPSS

CVSS 10 · high

Is it mine?

15 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

added 2022-02-10remediate by 2022-08-10

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-27

Microsoft HTTP.sys Remote Code Execution Vulnerability

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."

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationSiemens PET/CT Systems Windows 7-Basedcisa_csaf_ot
In addition, Siemens recommends:
MitigationSiemens SPECT Systems Windows 7-Basedcisa_csaf_ot
In addition, Siemens recommends:
MitigationSiemens SPECT Workplaces/Symbia.net Windows 7-Basedcisa_csaf_ot
In addition, Siemens recommends:
MitigationSiemens SPECT/CT Systems Windows 7-Basedcisa_csaf_ot
In addition, Siemens recommends:

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9.8–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v2.010criticalAV:N/AC:L/Au:N/C:C/I:C/A:Csecondary · FSTEC (BDU) RU

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimaryCWE-94USCWE-94US

exploits (17)

Public proof-of-concept and weaponised exploit code.

auxiliary/dos/http/ms15_034_ulonglongaddMS15-034 HTTP Protocol Stack Request Handling Denial-of-Servicefunctional · metasploit
auxiliary/scanner/http/ms15_034_http_sys_memory_dumpMS15-034 HTTP Protocol Stack Request Handling HTTP.SYS Memory Information Disclosurefunctional · metasploit
EDB-36773Microsoft Windows - 'HTTP.sys' (PoC) (MS15-034)PoC · exploit_db
EDB-36776Microsoft Windows - 'HTTP.sys' HTTP Request Parsing Denial of Service (MS15-034)PoC · exploit_db
Cappricio-Securities/CVE-2015-1635Microsoft Windows 'HTTP.sys' - Remote Code ExecutionPoC · poc_in_github
SkinAir/ms15-034-Scanms15-034 or CVE-2015-1635 批量扫描PoC · poc_in_github

affected products (15)

Products and version ranges known to be affected.

Siemens PET/CT Systems: All Windows 7-based versionsall versionscisa_csaf_otUS
Siemens Siemens PET/CT Systems Windows 7-Based≤ vers:all/*cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
Microsoft Corp Windows 7all versionsfstec_bduRU
Microsoft Corp Windows 8all versionsfstec_bduRU
Microsoft Corp Windows 8.1all versionsfstec_bduRU
Microsoft Corp Windows Server 2008 R2all versionsfstec_bduRU
Microsoft Corp Windows Server 2012all versionsfstec_bduRU
Microsoft Corp Windows Server 2012 R2all versionsfstec_bduRU
microsoft windows 7all versionsnvdUScpe:2.3:o:microsoft:windows_7:*:*:*:*:*:*:*:*
microsoft windows 8all versionsnvdUScpe:2.3:o:microsoft:windows_8:*:*:*:*:*:*:*:*
microsoft windows 8.1all versionsnvdUScpe:2.3:o:microsoft:windows_8.1:*:*:*:*:*:*:*:*
microsoft windows server 2008= r2nvdUScpe:2.3:o:microsoft:windows_server_2008:*:*:*:*:*:*:*:*
microsoft windows server 2012all versionsnvdUScpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:*:*
microsoft windows server 2012= r2nvdUScpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSMA-17-215-02ICSMA-17-215-02_Siemens Molecular Imaging Vulnerabilities2017-08-03icsa · cisa_csaf_otUS
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd NVD CVE.org MITRE

published 2015-04-14modified 2026-06-17

related (10,442)

Related entries.

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+10437 more

references (23)

External citations — patches, advisories, analysis.

scry

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