CVE-2025-68645

HIGH8.8Published on December 22, 2025

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.

Actively exploited

In the CISA exploited-vulnerabilities catalogue since Jan 22, 2026
US federal agencies must remediate it by Feb 12, 2026 (BOD 22-01)
First attack observed 22 days after disclosure
Confirmed by sensors, not only by reports

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

Source: CISA KEV · Aug 17, 2026 Aug 14, 2026 Aug 13, 2026 Aug 12, 2026 Aug 8, 2026 Aug 4, 2026

CVSS score8.8 / 10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness type (CWE)CWE-98

Vendorssynacor