{"cve":"CVE-2021-38366","nvd":{"published":"2021-08-12T21:15:09.377","modified":"2026-06-17T04:01:57.800","status":"Modified","description":"Sitecore through 10.1, when Update Center is enabled, allows remote authenticated users to upload arbitrary files and achieve remote code execution by visiting an uploaded .aspx file at an admin/Packages URL.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-434"],"references":["https://blog.istern.dk/2021/08/10/sitecore-10-authenticated-file-upload-to-rce/","https://blog.istern.dk/2021/08/10/sitecore-10-authenticated-file-upload-to-rce/"],"products":["sitecore:sitecore"],"source":"nvd","synced_at":"2026-10-19T21:21:57.125947417+00:00"},"epss":{"cve":"CVE-2021-38366","score":0.02928,"percentile":0.8707,"date":"2026-10-31"},"kev":null,"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."]}