# 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. CVSS 8.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2025-68645
Last updated: 2026-06-17T09:59:22Z

- Published: 2025-12-22 00:00 UTC · Updated: 2026-06-17 09:59 UTC · Assigner: mitre
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS: 48.9%, 99th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2026-01-22, federal due date 2026-02-12, ransomware use: Unknown

## Description

A Local File Inclusion (LFI) vulnerability exists in the Webmail Classic UI of Zimbra Collaboration (ZCS) 10.0 and 10.1 because of improper handling of user-supplied request parameters in the RestFilter servlet. An unauthenticated remote attacker can craft requests to the /h/rest endpoint to influence internal request dispatching, allowing inclusion of arbitrary files from the WebRoot directory.

## CISA required action

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

## Affected vendors and products

- Synacor:  Zimbra Collaboration Suite (ZCS)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-68645)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-68645)
- [https://wiki.zimbra.com/wiki/Security\_Center](https://wiki.zimbra.com/wiki/Security_Center)
- [https://wiki.zimbra.com/wiki/Zimbra\_Responsible\_Disclosure\_Policy](https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-68645 · Markdown: https://rewindex.com/cve/CVE-2025-68645.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-68645 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:05:13.927Z