CVE-2025-68645

HIGH

8.8

CVSS Score

Published: December 22, 2025 at 12:00 AM UTC

Updated: June 17, 2026 at 09:59 AM UTC

2 products affected across 2 vendorsCollaborationCollaboration

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Severity

HIGH8.8

Exploitation

CISA KEV

Exploit prediction

EPSS 49%

SSVC

Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score48.9%

EPSS (Exploit Prediction Scoring System) estimates a 48.9% chance this CVE is exploited in the wild within the next 30 days — higher than 99% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

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

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

Ransomware Use

Unknown

Added to KEV

Jan 22, 2026

Remediation Due

Feb 12, 2026

256 days overdue

Notes

https://wiki.zimbra.com/wiki/Security_Center

https://nvd.nist.gov/vuln/detail/CVE-2025-68645

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.