Exploitation Summary
CVE-2019-9621 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added July 7, 2025.
EIP tracks 4 public exploits from researchers including Metasploit, k8gege, An Trinh, Khanh Viet Pham, Jacob Robles, including a Metasploit module exploits/linux/http/zimbra_xxe_rce.
A Nuclei detection template is also available.
AI-analyzed exploit summary This Metasploit module exploits CVE-2019-9670 and CVE-2019-9621 in Zimbra Collaboration Suite, chaining XXE and SSRF vulnerabilities to achieve unauthenticated remote code execution via a JSP webshell upload.
Description
Zimbra Collaboration Suite before 8.6 patch 13, 8.7.x before 8.7.11 patch 10, and 8.8.x before 8.8.10 patch 7 or 8.8.x before 8.8.11 patch 3 allows SSRF via the ProxyServlet component.
Exploits (4)
This Metasploit module exploits CVE-2019-9670 and CVE-2019-9621 in Zimbra Collaboration Suite, chaining XXE and SSRF vulnerabilities to achieve unauthenticated remote code execution via a JSP webshell upload.
This exploit leverages an XXE vulnerability (CVE-2019-9621) in Zimbra Collaboration Suite to extract credentials, perform SSRF to obtain an admin token, and upload a malicious JSP shell for remote code execution. The PoC is functional and demonstrates a multi-stage attack chain.
This repository contains a working exploit for CVE-2019-9621, targeting Zimbra Collaboration Suite versions <8.8.11. The exploit chains XXE (XML External Entity) and SSRF (Server-Side Request Forgery) vulnerabilities to achieve unauthenticated remote code execution (RCE) by uploading a JSP webshell.
This Metasploit module exploits CVE-2019-9621, an XXE vulnerability in Zimbra Collaboration Suite's Autodiscover Servlet, combined with SSRF in the ProxyServlet to achieve unauthenticated remote code execution. It chains multiple steps: XXE to leak LDAP credentials, SSRF to escalate to admin, and file upload for JSP shell deployment.
Nuclei Templates (1)
html:"Zimbra Collaboration Suite Web Client"
References (10)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N