Command Injection Affecting samba package, versions [,4.21.9)[4.22.0rc1,4.22.5)[4.23.0rc1,4.23.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published16 Oct 2025
- disclosed15 Oct 2025
- creditUnknown
Introduced: 15 Oct 2025
CVE-2025-10230 (opens in a new tab)How to fix?
Upgrade samba to version 4.21.9, 4.22.5, 4.23.2 or higher.
Overview
Affected versions of this package are vulnerable to Command Injection via the wins hook process. An attacker can execute arbitrary commands with the privileges of the Samba process by sending specially crafted NetBIOS names in WINS registration packets, which are concatenated into a shell command and executed without validation. This is only exploitable if the system is configured as a domain controller with both WINS support and the wins hook parameter enabled.
Workaround
This vulnerability can be mitigated by removing or leaving the wins hook parameter empty in smb.conf, ensuring that WINS support is set to no on all Domain Controllers, and restricting external access to UDP port 137 to trusted networks.