{"id":"CVE-2018-0824","published":"2018-05-09T19:29:00Z","modified":"2026-06-17T01:31:44Z","title":"Microsoft COM for Windows Deserialization of Untrusted Data Vulnerability","vendor":"Microsoft","product":"Windows","tier":"core","eol":null,"description":{"text":"A remote code execution vulnerability exists in \"Microsoft COM for Windows\" when it fails to properly handle serialized objects, aka \"Microsoft COM for Windows Remote Code Execution Vulnerability.\" This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.","provenance":"source","from":"NVD"},"summary":{"text":"A deserialization flaw in the Microsoft COM component of Windows fails to properly handle serialized objects, leading to remote code execution. The vulnerability is in Microsoft COM for Windows, affecting multiple Windows versions and server editions.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:10:18Z"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.73037,"percentile":0.99453,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2024-08-05","dueDate":"2024-08-26","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","notes":"https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2018-0824; https://nvd.nist.gov/vuln/detail/CVE-2018-0824","provenance":"source"},"vulncheckKev":{"dateAdded":"2024-08-01","exploitedFirstSeen":"2024-08-01","ransomware":false,"evidence":[{"url":"https://blog.talosintelligence.com/chinese-hacking-group-apt41-compromised-taiwanese-government-affiliated-research-institute-with-shadowpad-and-cobaltstrike-2/","date":"2024-08-01"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2024-08-05"},{"url":"https://www.cyfirma.com/research/apt-quarterly-highlights-q3-2024/","date":"2024-10-25"},{"url":"https://www.enisa.europa.eu/sites/default/files/2025-10/ENISA%20Threat%20Landscape%202025.pdf","date":"2025-10-09"}],"evidenceTotal":4,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"references":[{"url":"http://www.securityfocus.com/bid/104030","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://www.securitytracker.com/id/1040848","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0824","tags":["Patch","Vendor Advisory"]},{"url":"https://www.exploit-db.com/exploits/44906/","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://www.securityfocus.com/bid/104030","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://www.securitytracker.com/id/1040848","tags":["Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0824","tags":["Patch","Vendor Advisory"]},{"url":"https://www.exploit-db.com/exploits/44906/","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0824","tags":["US Government Resource"]}],"techniques":[{"id":"T1203","name":"Exploitation for Client Execution","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Remote code execution via COM object handling","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"A remote code execution vulnerability exists in \"Microsoft COM for Windows","start":0,"end":74}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Deserialization yields arbitrary code execution","mappingType":"primary_impact","evidence":[{"from":"description","quote":"fails to properly handle serialized objects","start":84,"end":127}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2018-1629","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-1629","exploited":true,"exploitedSince":"2024-08-05","provenance":"source"},"exploits":[{"id":44906,"url":"https://www.exploit-db.com/exploits/44906","title":"Microsoft COM for Windows - Privilege Escalation","type":"local","platform":"windows","date":"2018-06-18","verified":false,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":1,"earliest":"2018-06-18"},"pocGithub":{"count":1,"skipped":0,"earliest":"2018-06-15","earliestUrl":"https://github.com/codewhitesec/UnmarshalPwn","repos":[{"name":"codewhitesec/UnmarshalPwn","url":"https://github.com/codewhitesec/UnmarshalPwn","stars":88,"created":"2018-06-15"}]},"metasploit":[{"name":"Windows unmarshal post exploitation","module":"post/windows/escalate/unmarshal_cmd_exec","type":"post","disclosureDate":"2018-08-05","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/post/windows/escalate/unmarshal_cmd_exec.rb"}],"first":{"date":"2018-06-15","source":"PoC-in-GitHub","url":"https://github.com/codewhitesec/UnmarshalPwn"},"provenance":"source"},"exploitRefs":["https://www.exploit-db.com/exploits/44906/"],"flow":[{"stage":"exploitation","techniques":["T1203"],"provenance":"ai"},{"stage":"primary","techniques":["T1059"],"provenance":"ai"}],"timeline":[{"date":"2018-05-09","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-0824","provenance":"source"},{"date":"2018-06-15","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub; later: Exploit-DB 2018-06-18, Metasploit 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ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.89,"detail":"percentile 0.9945"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 NVD reference tagged Exploit; 1 Exploit-DB entry; 1 PoC-in-GitHub repo; 1 Metasploit module"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":6.16,"detail":"base score 8.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-microsoft-windows-cwe-502"}}