CVE-2019-9621Zimbra 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.
Updated under an hour ago ()
Does this affect you?
It affects synacor zimbra_collaboration_suite. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Jul 7, 2025; federal agencies had to remediate by Jul 28, 2025. Treat that date as your deadline.
Do this next
Free account, 1 product
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
- 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-918
- Known exploited
- Added to CISA KEV Jul 7, 2025; federal remediation due Jul 28, 2025Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 81.04% (percentile 100)
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
synacor zimbra_collaboration_suite synacor:zimbra_collaboration_suite | before 8.6.0; from 8.7.0 before 8.7.11; from 8.8.0 before 8.8.9; 8.6.0; 8.6.0; 8.6.0; 8.6.0; 8.6.0; and 40 more ranges | NVD |
References
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisoriesx-refsource-confirm, vendor-advisory
- https://wiki.zimbra.com/wiki/Security_Centerx-refsource-misc, release-notes, vendor-advisory
- https://bugzilla.zimbra.com/show_bug.cgi?id=109127x-refsource-misc, issue-tracking
- http://www.rapid7.com/db/modules/exploit/linux/http/zimbra_xxe_rcex-refsource-misc, exploit, third-party-advisory
- http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
- https://www.exploit-db.com/exploits/46693/exploit, x-refsource-exploit-db, third-party-advisory, vdb-entry
- https://blog.zimbra.com/2019/03/9826/x-refsource-misc, vendor-advisory
- https://blog.tint0.com/2019/03/a-saga-of-code-executions-on-zimbra.htmlx-refsource-misc, third-party-advisory
- http://packetstormsecurity.com/files/153190/Zimbra-XML-Injection-Server-Side-Request-Forgery.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9621us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.