{"cve":"CVE-2020-0646","nvd":{"published":"2020-01-14T23:15:33.143","modified":"2026-06-17T02:46:15.230","status":"Analyzed","description":"A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly, aka '.NET Framework Remote Code Execution Injection Vulnerability'.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-91"],"references":["http://packetstormsecurity.com/files/156930/SharePoint-Workflows-XOML-Injection.html","https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0646","http://packetstormsecurity.com/files/156930/SharePoint-Workflows-XOML-Injection.html","https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0646","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0646"],"products":["microsoft:.net_framework"],"source":"nvd","synced_at":"2026-10-19T21:01:01.339895972+00:00"},"epss":{"cve":"CVE-2020-0646","score":0.99222,"percentile":0.99935,"date":"2026-10-31"},"kev":{"cve":"CVE-2020-0646","date_added":"2021-11-03","due_date":"2022-05-03","vendor":"Microsoft","product":".NET Framework","known_ransomware":false},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}