{"id":"CVE-2015-1635","url":"https://www.cyber-defence.io/tools/cve/CVE-2015-1635","generatedAt":"2026-10-31T22:34:08.749Z","title":"Microsoft HTTP.sys Remote Code Execution Vulnerability","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.\"","published":"2015-04-14T20:59:01.000Z","lastModified":"2026-06-17T00:22:44.000Z","status":"Analyzed","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-94"],"affected":["microsoft/windows 7","microsoft/windows 8","microsoft/windows 8.1","microsoft/windows server 2008","microsoft/windows server 2012"],"epss":{"score":0.99999,"percentile":0.99997,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2022-02-10","dueDate":"2022-08-10","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2015-1635"},"exploits":{"count":2,"verified":false,"firstPublished":"2015-04-15","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":36776,"kind":"exploit","title":"Microsoft Windows - 'HTTP.sys' HTTP Request Parsing Denial of Service (MS15-034)","url":"https://www.exploit-db.com/exploits/36776","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/dos/36776.py","file":"exploits/windows/dos/36776.py","published":"2015-04-16","added":"2015-04-16","updated":"2015-04-16","author":"laurent gaffie","type":"dos","platform":"windows","port":80,"verified":false,"codes":["CVE-2015-1635","OSVDB-120629","MS15-034"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null},{"edbId":36773,"kind":"exploit","title":"Microsoft Windows - 'HTTP.sys' (PoC) (MS15-034)","url":"https://www.exploit-db.com/exploits/36773","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/dos/36773.c","file":"exploits/windows/dos/36773.c","published":"2015-04-15","added":"2015-04-15","updated":"2015-04-15","author":"rhcp011235","type":"dos","platform":"windows","port":null,"verified":false,"codes":["CVE-2015-1635","OSVDB-120629","MS15-034"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 10 August 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/131463/Microsoft-Windows-HTTP.sys-Proof-Of-Concept.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"http://www.osvdb.org/120629","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/bid/74013","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"http://www.securitytracker.com/id/1032109","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-034","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"https://www.exploit-db.com/exploits/36773/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"https://www.exploit-db.com/exploits/36776/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"http://packetstormsecurity.com/files/131463/Microsoft-Windows-HTTP.sys-Proof-Of-Concept.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.osvdb.org/120629","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/74013","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1032109","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-034","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/36773/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/36776/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1635","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2015-1635","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}