CVE-2025-68645

Name: CVE-2025-68645
Creator: NVD / NIST
Published: 2025-12-22T18:16:17.07+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 31.77%

Last modified Jun 17, 2026

CVE-2025-68645 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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 has confirmed active exploitation in the wild. EPSS estimates a 31.77% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

31.77%

98.1th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Feb 12, 2026.

Weakness Enumeration

CWE-98

Affected Software

Vendor	Product	Versions
Synacor	Zimbra Collaboration Suite	>= 10.0.0, < 10.0.18
Synacor	Zimbra Collaboration Suite	>= 10.1.0, < 10.1.13

References

https://wiki.zimbra.com/wiki/Security_CenterRelease Notes, Vendor Advisory
https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_PolicyProduct
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-68645US Government Resource

Timeline

Published: Dec 22, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-68645?

How severe is CVE-2025-68645?

CVE-2025-68645 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 31.77% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2025-68645?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-68645?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST