Synacor Zimbra Collaboration Suite (ZCS) PHP Remote File Inclusion Vulnerability

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• NewsExploited · CISA KEVSynacor · Zimbra Collaboration Suite (ZCS)

  Synacor Zimbra Collaboration Suite (ZCS) PHP Remote File Inclusion Vulnerability

  CVE-2025-68645

  Synacor Zimbra Collaboration Suite (ZCS) contains a PHP remote file inclusion vulnerability that could allow for remote attackers to craft requests to the /h/rest endpoint to influence internal request dispatching, allowing inclusion of arbitrary files from the WebRoot directory.

  CISA's required action · due 12 Feb 2026 for U.S. federal civilian agencies

  Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  Cited by CISA: wiki.zimbra.com · nvd.nist.gov

  Added to KEV 22 Jan 2026 · Source checked 4 Nov 2026, 16:40 UTC · CISA KEV entry

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