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VulnerabilityPublished

CVE-2025-66002: https://github.com/KDE/ smb4k · Argument Injection

Affects https://github.com/KDE/ smb4kSource CVE Database V5

0

Not known to be exploited · CVSS 6.9 Medium : upgrade to 4.0.5 when convenient.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.0.5
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade https://github.com/KDE/ smb4k to 4.0.5.

Affected software

ProductAffectedFixed in
https://github.com/KDE/smb4kAffected
  • ≥ ?, < 4.0.5
Fixed in
  • 4.0.5

AI-suggested

  1. Restrict local user permissions to limit who can execute smb4k and its mount helper, ensuring only trusted users have access.
  2. Employ Linux security modules (e.g., AppArmor, SELinux) to confine smb4k mount helper execution and prevent unauthorized argument injection.
  3. Monitor system logs for unusual unmount commands or smb4k usage patterns indicative of exploitation attempts.
  4. Disable or remove smb4k on systems where it is not essential to reduce the attack surface.
  5. Once patches or updates are released by KDE, prioritize their deployment across all affected systems.
  6. Educate local users about the risks of executing untrusted commands and enforce strict user account management.
  7. Consider implementing multi-factor authentication or session restrictions on multi-user systems to reduce the risk of local privilege abuse.
  8. Conduct regular audits of SMB share mounts and unmounts to detect anomalies early.

Description

An Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') vulnerability allows local users ton perform arbitrary unmounts via smb4k mount helper

References

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