CVE-2025-68645 (GCVE-0-2025-68645)

Vulnerability from cvelistv5 – Published: 2025-12-22 00:00 – Updated: 2026-02-26 16:07
VLAI CISA Previdian
Summary
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.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-23 04:55 UTC
CWE
  • n/a
  • CWE-98 - Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
Assigner
References
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 2b3c3e90-9867-4a61-a76d-caf464d582d6

Vulnerability ID: CVE-2025-68645

Status: Confirmed

Status Updated: 2026-01-22 01:00 CET

Exploited: Yes

Timestamps
First Seen: 2026-01-22
Asserted: 2026-01-22
Scope
Notes: Synacor Zimbra Collaboration Suite (ZCS) PHP Remote File Inclusion Vulnerability | Affected: Synacor / Zimbra Collaboration Suite (ZCS) | Description: Synacor Zimbra Collaboration Suite (ZCS) contains a PHP remote file inclusion vulnerability that could allow for remote attackers to craft requests to the /h/rest endpoint to influence internal request dispatching, allowing inclusion of arbitrary files from the WebRoot directory. | 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. | Due date: 2026-02-12 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://wiki.zimbra.com/wiki/Security_Center ; https://nvd.nist.gov/vuln/detail/CVE-2025-68645
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-98
Feed CISA Known Exploited Vulnerabilities Catalog
Product Zimbra Collaboration Suite (ZCS)
Due Date 2026-02-12
Date Added 2026-01-22
Vendorproject Synacor
Vulnerabilityname Synacor Zimbra Collaboration Suite (ZCS) PHP Remote File Inclusion Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-10-02 08:09 CEST | Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 28bc87fd-258f-4298-ac40-5d3f0471ca6c

Vulnerability ID: CVE-2025-68645

Status: Confirmed

Status Updated: 2026-06-01 02:00 CEST

Exploited: Yes

Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: A Local File Inclusion (LFI) vulnerability exists in the Webmail Classic UI of Zimbra Collaboration (ZCS) 10.0 and 10.1 because of improper... | Affected: Zimbra / Zimbra Collaboration (ZCS) | CVSS: 8.8 (HIGH) | EPSS: 0.48873 | Used in malware: unknown | Listed 1 day ahead of CISA KEV | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title A Local File Inclusion (LFI) vulnerability exists in the Webmail Classic UI of Zimbra Collaboration (ZCS) 10.0 and 10.1 because of improper...
Cve Id CVE-2025-68645
Vendor Zimbra
Ghsa Id None
Product Zimbra Collaboration (ZCS)
Added Date 2026-06-01T00:00:00.000Z
Cvss Score 8.8
Epss Score 0.48873
Previous Ids
Cvss Severity HIGH
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.98843
Used In Malware unknown
Vulnerability Id CVE-2025-68645
Ahead Of Cisa Kev 
{
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  "unit": "day"
}
Not Yet In Cisa Kev False
References
Created: 2026-10-02 09:09 CEST | Updated: 2026-10-02 09:09 CEST
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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