Local users can perform arbitrary unmounts via smb4k mount helper due to lack of input validation
Priority LOW 30CWE-88Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Low · Low · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-88.
Summary
An Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') vulnerability allows local users ton perform arbitrary unmounts via smb4k mount helper
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00158 4th percentileScored 2026-11-07
Fix Fixed smb4k (https://github.com/KDE/): 4.0.5
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| https://github.com/KDE/ | smb4k | ? to before 4.0.5 | 4.0.5 | Patch available | CNA |
- smb4k Vendorhttps://github.com/KDE/ Affected ? to before 4.0.5 Fixed in 4.0.5 Patch available CNA
Remediation
- Fix · CNA smb4k (https://github.com/KDE/) Fixed in 4.0.5
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
https://github.com/KDE/ smb4k 4.0.5
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2025-40540 Local users can perform a local root exploit via smb4k mounthelperPriority LOW 33
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2025-66002
- 2026-10-03 Alias added: GHSA-g8f7-f2vp-fv6x
References
More https://github.com/KDE/ vulnerabilities
- TI-2025-40540 Local users can perform a local root exploit via smb4k mounthelper CVSS 4.0HIGH 7.3
Sources
- CVE-2025-66002 · CVE Program
- CVE-2025-66002 · NVD
- FIRST EPSS
- GHSA-g8f7-f2vp-fv6x · GitHub Advisory Database · CC BY 4.0
- CVE-2025-66002 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences