nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2019-25714 CVE-2019-25714
CRITICAL
Seeyon Office Anywhere (OA) A8 Unauthenticated Arbitrary File Write via htmlofficeservlet
Record summary
CVE-2019-25714 has a selected CVSS score of 9.3 (critical).
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).
Description source: CVE List
Exploitation context
Known exploitation
- VulnCheck KEV
- Listed · Apr 21, 2026 · VulnCheck
- Reported exploitation
- Observed · VulnCheck
CISA SSVC decision
ExploitationPoC
AutomatableYes
Technical impactTotal
CISA Coordinator · SSVC 2.0.3 · Evaluated Apr 21, 2026 · Source: CVE List
Affected products and versions
3| Product | Source | Version range | Status |
|---|---|---|---|
Seeyon Internet SoftwareBrowse A8-V5 Collaborative Management Software / Seeyon Internet Software | VulnCheck | Version data not supplied | |
A8+ Collaborative Management SoftwareBrowse Seeyon Internet Software / A8+ Collaborative Management SoftwareDefault status: unknown | CVE List | 7.0 | affected |
| 7.0sp1 | affected | ||
| 7.0sp2 | affected | ||
| 7.0sp3 | affected | ||
| 7.1 | affected | ||
A8-V5 Collaborative Management SoftwareBrowse Seeyon Internet Software / A8-V5 Collaborative Management SoftwareDefault status: unknown | CVE List | 6.1sp1 | affected |
References
8sourceforge.netproduct
https://sourceforge.net/software/product/A8 static-aliyun-doc.oss-cn-hangzhou.aliyuncs.comThird-party advisorymitigation
https://static-aliyun-doc.oss-cn-hangzhou.aliyuncs.com/download/pdf/90916/Security_Notification_reseller_en-US.pdf web.archive.orgexploit
https://web.archive.org/web/20190821034711/http://wyb0.com/posts/2019/seeyon-htmlofficeservlet-getshell wiki.96.mkexploit
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 broadcom.comThird-party advisory
https://www.broadcom.com/support/security-center/attacksignatures/detail?asid=31713 fortiguard.comThird-party advisory
https://www.fortiguard.com/encyclopedia/ips/48874/seeyon-office-anywhere-htmlofficeservlet-arbitrary-file-upload vulncheck.comThird-party advisory
https://www.vulncheck.com/advisories/seeyon-office-anywhere-oa-a8-unauthenticated-arbitrary-file-write-via-htmlofficeservlet