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    CVE-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.

    Published:May 29, 2019
    Last Modified:Nov 4, 2025
    EPS:May 29, 2019
    EPSS Score:0.9443
    CVSS Score:9.8

    CISA Notification

    Description

    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.

    Notes:

    No extra notes provided.

    Due Date
    Jul 10, 2022
    1524 days ago
    Alert Date
    Jan 10, 2022
    1705 days ago

    Affected Products

    Vendor
    Synacor
    Product
    Zimbra Collaboration Suite

    Exploits

    http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.htmlhttps://isc.sans.edu/forums/diary/CVE20199670+Zimbra+Collaboration+Suite+XXE+vulnerability/27570/https://www.exploit-db.com/exploits/46693/http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.htmlhttps://isc.sans.edu/forums/diary/CVE20199670+Zimbra+Collaboration+Suite+XXE+vulnerability/27570/https://www.exploit-db.com/exploits/46693/https://www.exploit-db.com/exploits/46693https://github.com/attackgithub/Zimbra-RCEhttps://github.com/Cappricio-Securities/CVE-2019-9670https://github.com/OracleNep/CVE-2019-9670-DtdFilegenerationhttps://github.com/Phuong39/zaberhttps://github.com/rek7/Zimbra-RCE

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-221 Data Serialization External Entities Blowup

    Related CVEs

    CVE-2026-73576 (CVSS 6.3) — In Zimbra Collaboration (ZCS) before 10.1.17, weak cryptographic key generation vulnerability exists in the On…
    CVE-2026-73575 (CVSS 3.1) — In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability exists in the …
    CVE-2026-73574 (CVSS 3.1) — In Zimbra Collaboration before 10.1.17, a local file inclusion (LFI) vulnerability exists in the Zimbra Classi…
    CVE-2026-73573 (CVSS 3.1) — In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra Briefcase do…
    CVE-2026-73572 (CVSS 6.1) — In Zimbra Collaboration (ZCS) before 10.1.17, a stored cross-site scripting (XSS) vulnerability exists in the …
    CVE-2026-73571 (CVSS 3.1) — An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to improper auth…
    CVE-2026-73570 (CVSS 8.9) — A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zi…
    CVE-2026-33373 (CVSS 8.8) — An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A Cross-Site Request Forgery (CSRF) vulne…
    CVE-2026-33372 (CVSS 5.4) — An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A cross-site request forgery (CSRF) vulne…
    CVE-2026-33370 (CVSS 6.1) — An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A stored cross-site scripting (XSS) vulne…

    References

    http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html
    http://www.rapid7.com/db/modules/exploit/linux/http/zimbra_xxe_rce
    https://bugzilla.zimbra.com/show_bug.cgi?id=109129
    https://isc.sans.edu/forums/diary/CVE20199670+Zimbra+Collaboration+Suite+XXE+vulnerability/27570/
    https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
    https://www.exploit-db.com/exploits/46693/
    http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html
    http://www.rapid7.com/db/modules/exploit/linux/http/zimbra_xxe_rce
    https://bugzilla.zimbra.com/show_bug.cgi?id=109129
    https://isc.sans.edu/forums/diary/CVE20199670+Zimbra+Collaboration+Suite+XXE+vulnerability/27570/
    https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
    https://www.exploit-db.com/exploits/46693/
    https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9670

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High