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CVE-2026-3238 is an improper packet-validation flaw in Samba's WINS server component when Samba operates as an Active Directory Domain Controller. The RELEASE and MULTI_HOME_REG WINS protocol handlers can process malformed unauthenticated UDP requests without sufficient validation, leading to a NULL pointer dereference and crash of the WINS service. The issue affects Samba versions since 4.0 when WINS support is enabled.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability addressed by the Huawei EulerOS SA-2026-3797 security advisory; the content provides no technical vulnerability description.
A vulnerability addressed by Huawei EulerOS advisory SA-2026-3822 affecting Samba-related packages; technical flaw details are not provided.
A named vulnerability affecting the listed ZTE CGSL Main Samba-related packages; the content states exploits are available.
An additional Samba vulnerability patched in the same release cycle as CVE-2026-1933; no further details are provided in the content.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.