CVE-2016-3403

high
Published 2017-05-17 · Modified 2026-05-13
CVSS v3
8.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v2
6.8
VIR risk
8.8

Description

Multiple cross-site request forgery (CSRF) vulnerabilities in the Admin Console in Zimbra Collaboration before 8.6.0 Patch 8 allow remote attackers to hijack the authentication of administrators for requests that (1) add, (2) modify, or (3) remove accounts by leveraging failure to use of a CSRF token and perform referer header checks, aka bugs 100885 and 100899.

Predictions

Exploit likelihood
92%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://wiki.zimbra.com/wiki/Zimbra_Releases/8.7.0

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://wiki.zimbra.com/wiki/Zimbra_Releases/8.6_Patch_8

Application impact

VendorProductVersionsFixed
synacorzimbra_collaboration_suite{"endIncluding":"8.6.0"}

References

CWEs

CWE-352

Verify integrity in audit chain (admin only). AS-IS.