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Findings

CVE-2019-9670

Synacor Zimbra Collaboration Suite (ZCS) Improper Restriction of XML External Entity Reference

Published May 29, 2019 · updated Jun 16, 2026 · synacor zimbra collaboration suite

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.

Timeline

Detection, updates, and resolution for this record.

  1. May 29, 2019 · Catalog

    Detected

    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.

  2. Jan 10, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Jul 10, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Required action

Apply updates per vendor instructions.

CISA due date Jul 10, 2022

Affected

  • cpe synacor/zimbra collaboration suiteversion unspecified
  • cpe synacor/zimbra collaboration suite8.7.11
  • vendor Synacor Zimbra Collaboration Suite (ZCS)version unspecified

Sources

  • CISA KEVCVE-2019-9670

    Synacor Zimbra Collaboration Suite (ZCS) contains an improper restriction of XML external entity (XXE) vulnerability in the mailboxd component.

    cisa.gov
  • CVE.orgCVE-2019-9670

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2019-9670

    30-day exploitation probability 100.0%

    first.org
  • Exploit Database46693

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit Modulesexploit_linux/http/zimbra_xxe_rce

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDCVE-2019-9670

    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.

    nvd.nist.gov
  • Packet Storm Securityhttp://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References