CVE-2017-6821

9.8 criticalEPSS 3.8%

Critical (9.8) in synacor zimbra collaboration suite. EPSS 3.8% chance of exploitation in the next 30 days.

Directory traversal vulnerability in Zimbra Collaboration Suite (aka ZCS) before 8.7.6 allows attackers to have unspecified impact via unknown vectors.

Severity

CVSS 3.0

9.8 critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 3.8% chance of exploitation in the next 30 days; higher than 90% of CVEs (scores of 2026-10-31)
CWE: CWE-22
Published: 2017-05-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

synacor:zimbra_collaboration_suite

References

http://www.securityfocus.com/bid/98090
https://wiki.zimbra.com/wiki/Security_Center
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.7.6
http://www.securityfocus.com/bid/98090
https://wiki.zimbra.com/wiki/Security_Center

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