CVE-2025-68645 — zm-build
HIGHCVE-2025-68645 is a high-severity (CVSS 8.8) CWE-98 vulnerability. It is in CISA's Known Exploited Vulnerabilities catalog (added 2026-01-22) — treat it as actively exploited and patch now. A fix is available — see the affected versions and patch details below.
Exploitation Status
Actively exploited in the wild
- Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2026-01-22. Federal agencies were required to remediate by 2026-02-12.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2025-68645.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2025-68645 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 395,249 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.
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.
Affected Products
zimbra collaboration suitesynacorResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
VulnerabilityDetect
Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).
Fix
Upgrade the affected component to the fixed release for CVE-2025-68645, or apply your distribution's backported patch — distro builds are often patched at an older version number, so check your vendor's advisory rather than the upstream version alone.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How to detect CVE-2025-68645
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id cve-2025-68645 -u https://target- Template
- Zimbra Collaboration - Local File Inclusion
- Severity
- high
- Impact
- Unauthenticated remote attackers can include arbitrary files from the WebRoot directory, potentially exposing sensitive information.
- Remediation
- Update to the latest version of Zimbra Collaboration.
Template by ProjectDiscovery nuclei-templates (DhiyaneshDk, sirifu4k1), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is CVE-2025-68645 in your dependencies?
Find it across , including transitive dependencies.