mailboxd component in Synacor Zimbra Collaboration Suite 8.7.x before 8.7.11p10 has an XML External Entity injection (XXE) vulnerability, as demonstrated by Autodiscover/Autodiscover.xml.
https://bugzilla.zimbra.com/show_bug.cgi?id=109129
https://www.exploit-db.com/exploits/46693/
https://www.tenable.com/blog/government-advisories-warn-of-apt-activity-resulting-from-russian-invasion-of-ukraine
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
https://isc.sans.edu/forums/diary/CVE20199670+Zimbra+Collaboration+Suite+XXE+vulnerability/27570/
http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html
Source: Mitre, NVD
Published: 2019-05-29
Updated: 2025-04-03
Known Exploited Vulnerability (KEV)
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.9443