CVE-2026-3238

Samba: denial of service against ad dc wins server

CVSS 7.5 HIGHEPSS 2.6%CWE-476

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Produtos afetados

Red Hat · Red Hat Enterprise Linux 10 Red Hat · Red Hat Enterprise Linux 6 Red Hat · Red Hat Enterprise Linux 7 Red Hat · Red Hat Enterprise Linux 8 Red Hat · Red Hat Enterprise Linux 9 Red Hat · Red Hat OpenShift Container Platform 4

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Referências

https://access.redhat.com/security/cve/CVE-2026-3238 https://bugzilla.redhat.com/show_bug.cgi?id=2486176 https://www.samba.org/samba/security/CVE-2026-3238.html