High severity · published Apr 30, 2019
CVE-2019-9621
Synacor Zimbra Collaboration Suite (ZCS) Server-Side Request Forgery (SSRF) Vulnerability
In wildKEV
7.5
CVSS
81%
EPSS
Yes
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)81.0% · higher than 100% of CVEs
Exploited in the wildYes
CISA KEVListed Jul 7, 2025
Federal remediation dueJul 28, 2025
Ransomware campaign useNot known
Affected products
Which versions
ZC
Zimbra Collaboration Suite · Synacor
before 8.6.0; 8.7.0 before 8.7.11; 8.8.0 before 8.8.9; 8.6.0; 8.6.0; 8.6.0; +34 more · source: NVD
ZC
Zimbra Collaboration Suite (ZCS) · Synacor
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-9621
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-9621
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_CONFIRM
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
x_refsource_MISC
https://wiki.zimbra.com/wiki/Security_Center
x_refsource_MISC
https://bugzilla.zimbra.com/show_bug.cgi?id=109127
x_refsource_MISC
http://www.rapid7.com/db/modules/exploit/linux/http/zimbra_xxe_rce
x_refsource_MISC
http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html
exploit
https://www.exploit-db.com/exploits/46693/
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