XXE in Synacor Zimbra_collaboration_suite

CVE-2016-9924

Zimbra Collaboration Suite (ZCS) before 8.7.4 allows remote attackers to conduct XML External Entity (XXE) attacks.

Vulnerability class: XXE (XML External Entity)

EPSS: 0.007 (71.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2016-9924?
CVE-2016-9924 is a critical-severity vulnerability in Synacor Zimbra_collaboration_suite, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2017-03-29.
How severe is CVE-2016-9924?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2016-9924 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.