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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.944
EPSS Ranking 100.0%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 7.5
Proposed Action
Synacor Zimbra Collaboration Suite (ZCS) contains an improper restriction of XML external entity (XXE) vulnerability in the mailboxd component.