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CVE-2026-3012 is an improper certificate validation flaw in Samba certificate auto-enrollment Group Policy processing, affecting Samba 4.16 and later. During certificate-chain bootstrap, a domain member can retrieve a CA certificate through plaintext HTTP and install it in its local trust store without validating the certificate or protecting the transport against substitution. The vulnerable behavior is in Samba's certificate auto-enrollment handling; it preferred or accepted HTTP retrieval despite encrypted LDAP certificate data being available. The upstream fix removes the HTTP retrieval path, obtains certificate data exclusively from LDAP, and verifies that the required CA-certificate directory attribute is present before enrollment continues.
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26 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.
A Samba vulnerability where group policy certificate enrollment uses HTTP without validation.
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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.