CVE-2026-3238

7.5 highEPSS 2.7%

High (7.5). EPSS 2.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

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

EPSS: 2.7% chance of exploitation in the next 30 days; higher than 85% of CVEs (scores of 2026-10-31)
CWE: CWE-476
Published: 2026-06-08
Modified: 2026-09-01
Record from: the NVD, synced 2026-10-19

References

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

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