Security readout for executives and security teams
Plain-English summary
CVE-2025-68645 is a high-severity Zimbra Collaboration issue in the Webmail Classic UI. A remote unauthenticated attacker could manipulate requests to include files from the application WebRoot. This could expose sensitive data or affect application behavior, depending on deployment and accessible files. No cited source confirms active exploitation.
Executive priority
Treat this as a high-priority email-platform exposure, especially for internet-facing Zimbra deployments. Email systems often hold sensitive communications and credentials. Act promptly, but avoid assuming active exploitation unless new vendor, CISA, or trusted intelligence confirms it.
Technical view
The issue is an LFI in ZCS 10.0 and 10.1, tied to improper handling of user-supplied parameters in the RestFilter servlet. Crafted requests to /h/rest can influence internal request dispatching and include arbitrary files from WebRoot. The CVSS v3.1 score is 8.8, with network attack vector, low complexity, no privileges, and user interaction required.
Likely exposure
Organizations running Zimbra Collaboration 10.0 or 10.1 with Webmail Classic UI reachable over a network should treat exposure as plausible. The source bundle does not provide specific fixed versions, package names, or configuration-dependent limitations.
Exploitation context
The vulnerability is remotely reachable and unauthenticated, but the CVSS vector lists user interaction required. CISA KEV status in the provided bundle is false, and no cited source confirms exploitation in the wild. Public exploit availability is not established from the provided sources.
Researcher notes
Evidence is limited to the CVE description, CVSS vector, Zimbra reference pages, and CISA KEV query. The affected statement names ZCS 10.0 and 10.1, but the structured affected fields are not populated. No patch version, workaround, proof-of-concept, or exploitation report is included in the supplied sources.
Mitigation direction
- Review Zimbra Security Center for vendor-fixed versions or advisories.
- Prioritize patching or vendor-recommended mitigation for exposed ZCS 10.0 and 10.1 systems.
- Restrict external access to Zimbra Webmail where business operations allow.
- Monitor Zimbra logs for unusual requests targeting /h/rest.
- Disable or limit Classic UI only if supported by Zimbra guidance.
Validation and detection
- Inventory Zimbra Collaboration servers and identify versions 10.0 and 10.1.
- Confirm whether Webmail Classic UI is enabled and externally reachable.
- Review reverse proxy and web logs for abnormal /h/rest request patterns.
- Check vendor advisories for fixed builds matching installed versions.
- Verify CISA KEV status before treating exploitation as confirmed.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-98: Exact CWE lookup
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Open ATT&CK lookupCVE-2025-68645 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://wiki.zimbra.com/wiki/Security_CenterCVE reference
- https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_PolicyCVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-68645CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
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