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CVE-2019-9670: Synacor Zimbra Collaboration Suite (ZCS) Improper Restriction of XML External Entity Reference
Synacor Zimbra Collaboration Suite (ZCS) · in CISA KEV since 2022-01-10
2022-01-10added to KEV
2022-07-10federal remediation due date
99.99%EPSS exploit probability (30 days) 100.0th percentile
9.8 CRITICALCVSS 3.1
Unknownknown ransomware use
957days from NVD publication to KEV
What it is
Synacor Zimbra Collaboration Suite (ZCS) contains an improper restriction of XML external entity (XXE) vulnerability in the mailboxd component.
Required action (CISA)
Apply updates per vendor instructions.
| CWE | CWE-611 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD published | 2019-05-29 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2019-9670.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.