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.

CVSS v3.1 Score

8.8

HIGH

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

CISA Known Exploited Vulnerability

This vulnerability is actively exploited in the wild.

Added: Jan 22, 2026 Remediation due: Feb 12, 2026

Weakness Type (CWE)

CWE-98 CWE-98

Affected Products

Vendor	Product	Versions
synacor	zimbra_collaboration_suite	10.0.0 — 10.0.18
synacor	zimbra_collaboration_suite	10.1.0 — 10.1.13

References

Advisories & Patches

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

Other References

https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-68645

Frequently Asked Questions

What is CVE-2025-68645? +

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. It has a CVSS v3.1 base score of 8.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2025-68645? +

CVE-2025-68645 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-68645? +

CVE-2025-68645 affects products from synacor, specifically: zimbra_collaboration_suite. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-68645? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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