CVE-2025-66003 - CVE House

Status published High CVE-2025-66003

Local users can perform a local root exploit via smb4k mounthelper

7.3 CVSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Matthias Gerstner of SUSE

References

More from https://github.com/KDE/

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CVE-2025-66002

Local users can perform arbitrary unmounts via smb4k mount helper due to lack of input validation

Medium 6.9

Affected Vendor

https://github.com/KDE/

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Affected Software

smb4k

Vulnerable Versions:

Timeline

Official Publish: January 8th, 2026

Last Modified: January 8th, 2026

Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-73

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

Initial Access

T1005 Data from Local System

Collection

T1105 Ingress Tool Transfer

Command and Control

T1574 Hijack Execution Flow

Privilege Escalation

T1565 Data Manipulation

Impact