CVE-2026-3238

Impact

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.

Affected packages

This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.

Weakness classification

References

• NVD record
• CVE.org record
• 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
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3238.json