{"cve":"CVE-2022-50993","nvd":{"published":"2026-04-30T17:16:24.800","modified":"2026-06-17T05:24:33.737","status":"Deferred","description":"Weaver (Fanwei) E-office versions prior to 10.0_20221201 contain an unauthenticated arbitrary file upload vulnerability in the OfficeServer.php endpoint that allows remote attackers to upload malicious files by sending multipart POST requests with arbitrary filenames and disguised content types. Attackers can upload PHP webshells to the Document directory and execute them via HTTP GET requests to achieve remote code execution as the web server user. Exploitation evidence was first observed by the Shadowserver Foundation on 2022-10-10 (UTC).","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.3},"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-434"],"references":["https://bbs.chaitin.cn/topic/37","https://cn-sec.com/archives/1453025.html","https://service.e-office.cn/knowledge/detail/5","https://www.vulncheck.com/advisories/weaver-e-office-10-0-20221201-unauthenticated-arbitrary-file-read-via-xmlrpcservlet"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:33:09.003606135+00:00"},"epss":{"cve":"CVE-2022-50993","score":0.00774,"percentile":0.55762,"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."]}