CVE-2025-66003
An External Control of File Name or Path vulnerability in smb4k allowsl ocal users to perform a local root exploit via smb4k mounthelper if they can access and control the contents of a Samba share…
Overview
CVE-2025-66003 is a known-severity vulnerability. It was published on January 8, 2026.
Technical description
An External Control of File Name or Path vulnerability in smb4k allowsl ocal users to perform a local root exploit via smb4k mounthelper if they can access and control the contents of a Samba shareThis issue affects smb4k: from ? before 4.0.5.
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
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Frequently asked questions
What is CVE-2025-66003?
CVE-2025-66003 is a known-severity vulnerability. It was published on January 8, 2026.
How severe is CVE-2025-66003?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2025-66003?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-66003?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-66003 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.