CVE-2026-3238
HIGH EPSS 83.7%
Published Jun 8, 20263w ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
Published Jun 8, 2026 3w ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
83.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-476 NULL Pointer Dereference Memory Safety
References 3
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-3238
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2486176
- samba.org https://www.samba.org/samba/security/CVE-2026-3238.html
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.