CVE-2019-9621 KEV EXPLOIT
7.5
HIGH · CVSS 3.1 · EPSS 81% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2025-07-28.
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.
Scoring
| CVSS | 7.5 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| EPSS | 81.04% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-918 |
| On CISA KEV | yes — remediate by 2025-07-28 |
| Public exploit | yes |
| Published | 2019-04-30 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Synacor Zimbra Collaboration Suite (ZCS) Server-Side Request Forgery (SSRF) Vulnerability |
|---|---|
| Added | 2025-07-07 |
| Due | 2025-07-28 |
| Vendor / product | Synacor / Zimbra Collaboration Suite (ZCS) |
| Ransomware use | none reported |
Affected (1)
| Vendor | Product |
|---|---|
| synacor | zimbra collaboration suite |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Zimbra < 8.8.11 - XML External Entity Injection / Server-Side Request Forgery | 2019-06-05 |
| exploit-db | Zimbra Collaboration - Autodiscover Servlet XXE and ProxyServlet SSRF (Metasploit) | 2019-04-12 |
References
- http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html
- http://packetstormsecurity.com/files/153190/Zimbra-XML-Injection-Server-Side-Request-Forgery.html
- http://www.rapid7.com/db/modules/exploit/linux/http/zimbra_xxe_rce
- https://blog.tint0.com/2019/03/a-saga-of-code-executions-on-zimbra.html
- https://blog.zimbra.com/2019/03/9826/
- https://bugzilla.zimbra.com/show_bug.cgi?id=109127
- https://wiki.zimbra.com/wiki/Security_Center
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
- https://www.exploit-db.com/exploits/46693/
- http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html
- http://packetstormsecurity.com/files/153190/Zimbra-XML-Injection-Server-Side-Request-Forgery.html
- http://www.rapid7.com/db/modules/exploit/linux/http/zimbra_xxe_rce
- https://blog.tint0.com/2019/03/a-saga-of-code-executions-on-zimbra.html
- https://blog.zimbra.com/2019/03/9826/
- https://bugzilla.zimbra.com/show_bug.cgi?id=109127
- https://wiki.zimbra.com/wiki/Security_Center
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
- https://www.exploit-db.com/exploits/46693/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9621
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