Vulnerability in Synacor Zimbra_collaboration_suite
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 a…
EPSS: 0.318 (98.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Synacor Zimbra_collaboration_suite
- N/a — versions n/a
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
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.
Public proof-of-concept exploits
References
- cve@mitre.org (Release Notes, Vendor Advisory)
- cve@mitre.org (Product)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2025-68645?
- CVE-2025-68645 is a high-severity vulnerability in Synacor Zimbra_collaboration_suite, classified under PHP Remote File Inclusion. CVSS score: 8.8/10. Published 2025-12-22.
- How severe is CVE-2025-68645?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-68645 known to be exploited?
- Yes. CVE-2025-68645 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-01-22), indicating it is being actively exploited. 9 public proof-of-concept repositories are indexed.