smb4k up to 4.0.4 Mount Helper file inclusion

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in smb4k up to 4.0.4 and classified as critical. The affected element is an unknown function of the component Mount Helper. This manipulation causes Local Privilege Escalation. The identification of this vulnerability is CVE-2025-66003. The attack can only be executed locally. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in smb4k up to 4.0.4 and classified as critical. Affected by this vulnerability is an unknown part of the component Mount Helper. The manipulation with an unknown input leads to a local privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-73. The product allows user input to control or influence paths or file names that are used in filesystem operations. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at seclists.org. This vulnerability is known as CVE-2025-66003. The exploitation appears to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 281598 (Debian dsa-6092 : smb4k - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.0.5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (281598). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: File inclusion
CWE: CWE-73
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 281598
Nessus Name: Debian dsa-6092 : smb4k - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: smb4k 4.0.5

Timelineinfo

12/12/2025 Advisory disclosed
12/12/2025 +0 days VulDB entry created
01/09/2026 +28 days VulDB entry last update

Sourcesinfo

Advisory: seclists.org
Status: Confirmed

CVE: CVE-2025-66003 (🔒)
GCVE (CVE): GCVE-0-2025-66003
GCVE (VulDB): GCVE-100-336199

Entryinfo

Created: 12/12/2025 15:26
Updated: 01/09/2026 13:09
Changes: 12/12/2025 15:26 (49), 01/02/2026 04:53 (2), 01/09/2026 13:09 (15)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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