Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2019-9621

CVE-2019-9621HIGH

n/a n/a — Synacor Zimbra Collaboration Suite (ZCS)

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  N  N    7.5   .8104   99.6   YES

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Mar 6   Reserved by mitre
  Apr 30  Published (CNA: mitre)
  Jul 7   Added to CISA KEV, remediation due 2025-07-28

CWE-918 · CNA: mitre · CVSS v3.1 · 10 references · KEV due July 28, 2025

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
March 6, 2019	Reserved	Reserved by mitre
April 30, 2019	Published	Published (CNA: mitre)
July 7, 2025	KEV ADDED	Added to CISA KEV, remediation due 2025-07-28

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-918

References (10)

http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html [x_refsource_MISC]
http://packetstormsecurity.com/files/153190/Zimbra-XML-Injection-Server-Side-Request-Forgery.html [x_refsource_MISC]
http://www.rapid7.com/db/modules/exploit/linux/http/zimbra_xxe_rce [x_refsource_MISC]
https://blog.tint0.com/2019/03/a-saga-of-code-executions-on-zimbra.html [x_refsource_MISC]
https://blog.zimbra.com/2019/03/9826/ [x_refsource_MISC]
https://bugzilla.zimbra.com/show_bug.cgi?id=109127 [x_refsource_MISC]
https://wiki.zimbra.com/wiki/Security_Center [x_refsource_MISC]
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories [x_refsource_CONFIRM]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9621 [government-resource]
https://www.exploit-db.com/exploits/46693/ [exploit, x_refsource_EXPLOIT-DB]

Authoritative record: CVE-2019-9621 at cve.org

Weaknesses: CWE-918

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2019-9621 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.