CVE-2025-68645 — Synacor Zimbra Collaboration Suite (ZCS) PHP Remote File Inclusion Vulnerability
CVE-2025-68645: Synacor Zimbra Collaboration Suite (ZCS) PHP Remote File Inclusion Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Synacor |
| Product | Zimbra Collaboration Suite (ZCS) |
| Date added | 2026-01-22 |
| Due date | 2026-02-12 |
| Ransomware campaign use | Unknown |
Description
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.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://wiki.zimbra.com/wiki/Security_Center ; https://nvd.nist.gov/vuln/detail/CVE-2025-68645
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-68645
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog