{"schema":"threatline.record/2","record":{"id":"CVE-2020-0646","aliases":[],"summary":"Microsoft .NET Framework Remote Code Execution Vulnerability","details":"Microsoft .NET Framework contains an improper input validation vulnerability that allows for remote code execution.","categories":["Runtimes & languages"],"product":".NET Framework","vendor":"Microsoft","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2","vendor":"Microsoft","versions":[{"status":"affected","version":"Windows 7 for 32-bit Systems Service Pack 1"},{"status":"affected","version":"Windows 7 for x64-based Systems Service Pack 1"},{"status":"affected","version":"Windows 8.1 for 32-bit systems"},{"status":"affected","version":"Windows 8.1 for x64-based systems"},{"status":"affected","version":"Windows RT 8.1"},{"status":"affected","version":"Windows Server 2008 R2 for x64-based Systems Service Pack 1"},{"status":"affected","version":"Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)"},{"status":"affected","version":"Windows Server 2012"},{"status":"affected","version":"Windows Server 2012 (Server Core installation)"},{"status":"affected","version":"Windows Server 2012 R2"},{"status":"affected","version":"Windows Server 2012 R2 (Server Core installation)"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2","vendor":"Microsoft","versions":[{"status":"affected","version":"Windows 10 Version 1607 for 32-bit Systems"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32-bit Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64-based Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows Server, version 1803  (Server Core Installation)","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32-bit Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64-based Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows Server 2016","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows Server 2016  (Server Core installation)","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows RT 8.1","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows Server 2012","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation)","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows Server 2012 R2","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation)","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019  (Server Core installation)","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32-bit Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64-based Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation)","vendor":"Microsoft","versions":[{"status":"affected","version":"1903"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019  (Server Core installation)","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.6","vendor":"Microsoft","versions":[{"status":"affected","version":"Windows Server 2008 for 32-bit Systems Service Pack 2"},{"status":"affected","version":"Windows Server 2008 for x64-based Systems Service Pack 2"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.0","vendor":"Microsoft","versions":[{"status":"affected","version":"Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2"},{"status":"affected","version":"Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2"},{"status":"affected","version":"Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5","vendor":"Microsoft","versions":[{"status":"affected","version":"Windows 10 Version 1607 for 32-bit Systems"},{"status":"affected","version":"Windows 8.1 for 32-bit systems"},{"status":"affected","version":"Windows 8.1 for x64-based systems"},{"status":"affected","version":"Windows Server 2012"},{"status":"affected","version":"Windows Server 2012 (Server Core installation)"},{"status":"affected","version":"Windows Server 2012 R2"},{"status":"affected","version":"Windows Server 2012 R2 (Server Core installation)"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5.1","vendor":"Microsoft","versions":[{"status":"affected","version":"Windows 7 for 32-bit Systems Service Pack 1"},{"status":"affected","version":"Windows 7 for x64-based Systems Service Pack 1"},{"status":"affected","version":"Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1"},{"status":"affected","version":"Windows Server 2008 R2 for x64-based Systems Service Pack 1"},{"status":"affected","version":"Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 4.5.2","vendor":"Microsoft","versions":[{"status":"affected","version":"Windows 7 for 32-bit Systems Service Pack 1"},{"status":"affected","version":"Windows 7 for x64-based Systems Service Pack 1"},{"status":"affected","version":"Windows 8.1 for 32-bit systems"},{"status":"affected","version":"Windows 8.1 for x64-based systems"},{"status":"affected","version":"Windows RT 8.1"},{"status":"affected","version":"Windows Server 2008 for 32-bit Systems Service Pack 2"},{"status":"affected","version":"Windows Server 2008 for x64-based Systems Service Pack 2"},{"status":"affected","version":"Windows Server 2008 R2 for x64-based Systems Service Pack 1"},{"status":"affected","version":"Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)"},{"status":"affected","version":"Windows Server 2012"},{"status":"affected","version":"Windows Server 2012 (Server Core installation)"},{"status":"affected","version":"Windows Server 2012 R2"},{"status":"affected","version":"Windows Server 2012 R2 (Server Core installation)"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1909 for 32-bit Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","source_modified_at":"2025-10-21T23:35:53.664Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1909 (Server Core installation)","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}],"defaultStatus":null}],"fixed_versions":[],"cvss":9.8,"severity":"Critical","kev":{"listed":true,"date_added":"2021-11-03","due_date":"2022-05-03","required_action":"Apply updates per vendor instructions.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.99222,"percentile":0.99937,"score_date":"2026-10-23"},"published_at":"2020-01-14T23:11:38.000Z","modified_at":"2025-10-21T23:35:53.664Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2020-0646","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:35:53.664Z"},{"source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/sharepoint_workflows_xoml.rb","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2020-03-02"},{"source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/48275","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2020-03-31"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2020-0646","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Metasploit","Exploit-DB","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-0646","source":"CISA KEV"},{"source":"CVE List","url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0646","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0646","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"total","assessed_at":"2025-02-07T15:18:23.162213Z"},"exploits":[{"source":"Metasploit","kind":"Exploit module","name":"SharePoint Workflows XOML Injection","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/sharepoint_workflows_xoml.rb","date":"2020-03-02","added":"2026-04-22","check":true},{"source":"Exploit-DB","kind":"Remote exploit","name":"SharePoint Workflows - XOML Injection (Metasploit)","url":"https://www.exploit-db.com/exploits/48275","date":"2020-03-31","added":"2020-03-31","verified":true}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2025-10-21T23:35:53.664Z","content_hash":"f98f6ae6dd6c77a840909f377d29c4d2e88226def48748ec8007bcaef2118bd2"}}
