{"cve":"CVE-2019-25714","nvd":{"published":"2026-04-21T17:16:20.777","modified":"2026-06-17T02:33:01.520","status":"Deferred","description":"Seeyon OA A8 contains an unauthenticated arbitrary file write vulnerability in the /seeyon/htmlofficeservlet endpoint that allows remote attackers to write arbitrary files to the web application root by sending specially crafted POST requests with custom base64-encoded payloads. Attackers can write JSP webshells to the web root and execute them through the web server to achieve arbitrary OS command execution with web server privileges. Exploitation evidence was first observed by the Shadowserver Foundation on 2021-03-26 (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":null,"cwes":["CWE-434"],"references":["https://sourceforge.net/software/product/A8/","https://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/90916/Security_Notification_reseller_en-US.pdf","https://web.archive.org/web/20190821034711/http://wyb0.com/posts/2019/seeyon-htmlofficeservlet-getshell/","https://wiki.96.mk/Web%E5%AE%89%E5%85%A8/%E8%87%B4%E8%BF%9Coa/%E8%87%B4%E8%BF%9C%20OA%20A8%20htmlofficeservlet%20getshell%20%E6%BC%8F%E6%B4%9E/","https://www.broadcom.com/support/security-center/attacksignatures/detail?asid=31713"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:30:49.762551342+00:00"},"epss":{"cve":"CVE-2019-25714","score":0.00653,"percentile":0.513,"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."]}