Known exploited vulnerability
CVE-2025-68645
The short answer
CVE-2025-68645 affects n/a n/a and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-01-22: attackers are using it, so patch it first.
What it is
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.
Weakness: CWE-98.
Severity
8.8 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Jan 22, 2026
Federal due date Feb 12, 2026
EPSS, next 30 days
51%
Higher than 99% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
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 products
n/a. NVD's record lists the exact affected versions.
References
- wiki.zimbra.com/wiki/Security_Center Release NotesVendor Advisory
- wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy Product
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-68645 US Government Resource
Questions
Is CVE-2025-68645 being exploited?
Yes. CISA added CVE-2025-68645 to its Known Exploited Vulnerabilities catalog on 2026-01-22, with a federal remediation due date of 2026-02-12.
How do I fix CVE-2025-68645?
CISA's 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.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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