high8.8Known exploited
CVE-2025-68645
Synacor Zimbra Collaboration Suite (ZCS) PHP Remote File Inclusion Vulnerability
Exploited in the wild
This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-01-22. Federal due date: 2026-02-12.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Synacor | Zimbra Collaboration Suite | from 10.0.0 before 10.0.18 from 10.1.0 before 10.1.13 |