CVE-2025-10230

Publication date 15 October 2025

Last updated 12 November 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

10.0 · Critical

Score breakdown

Description

A flaw was found in Samba, in the front-end WINS hook handling: NetBIOS names from registration packets are passed to a shell without proper validation or escaping. Unsanitized NetBIOS name data from WINS registration packets are inserted into a shell command and executed by the Samba Active Directory Domain Controller’s wins hook, allowing an unauthenticated network attacker to achieve remote command execution as the Samba process.

Read the notes from the security team

Status

Package Ubuntu Release Status
samba 25.10 questing
Fixed 2:4.22.3+dfsg-4ubuntu2.1
25.04 plucky
Fixed 2:4.21.4+dfsg-1ubuntu3.5
24.04 LTS noble
Fixed 2:4.19.5+dfsg-4ubuntu9.4
22.04 LTS jammy
Fixed 2:4.15.13+dfsg-0ubuntu1.10
20.04 LTS focal
Fixed 2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1
18.04 LTS bionic
Fixed 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3
16.04 LTS xenial
Fixed 2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4
14.04 LTS trusty
Fixed 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15

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Notes

mdeslaur

per Samba developers "WINS is an obsolete and trusting protocol" and "The WINS server used by Samba when it is not a domain controller is unaffected." Per Samba developers, this is an unusual configuration and "will affect very few, possibly zero, users"

Severity score breakdown

Parameter Value
Base score 10.0 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Changed
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

Other references