A flaw was found in Samba’s WINS server component when running as an Active Directory Domain Controller. The WINS protocol handlers for certain request types did not properly validate incoming packets, allowing an unauthenticated remote attacker to trigger a NULL pointer dereference and crash the WINS service using specially crafted UDP packets.
History

Tue, 09 Jun 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat openshift Container Platform
Samba
Samba samba
Vendors & Products Redhat openshift Container Platform
Samba
Samba samba

Mon, 08 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 08 Jun 2026 08:30:00 +0000

Type Values Removed Values Added
Description A flaw was found in Samba’s WINS server component when running as an Active Directory Domain Controller. The WINS protocol handlers for certain request types did not properly validate incoming packets, allowing an unauthenticated remote attacker to trigger a NULL pointer dereference and crash the WINS service using specially crafted UDP packets.
Title Samba: denial of service against ad dc wins server
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
Weaknesses CWE-476
CPEs cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat openshift
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-06-08T07:34:20.690Z

Updated: 2026-06-08T12:58:18.751Z

Reserved: 2026-02-26T00:47:38.208Z

Link: CVE-2026-3238

cve-icon Vulnrichment

Updated: 2026-06-08T12:58:14.841Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-08T09:16:30.160

Modified: 2026-06-08T14:59:24.257

Link: CVE-2026-3238

cve-icon Redhat

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