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A flaw was found in Samba’s certificate auto-enrollment Group Policy handling. When certificate auto-enrollment is enabled, Samba may retrieve a CA certificate over an unencrypted HTTP connection and install it into the local trust store without proper verification. An attacker with the ability to intercept or redirect network traffic could exploit this behavior to supply a malicious certificate authority certificate, potentially allowing interception or spoofing of trusted communications.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade ldb-toolsUpgrade samba-winbind-clientsUpgrade samba-commonUpgrade sambaUpgrade ctdbUpgrade samba-develUpgrade samba-pidlUpgrade python3-samba-dcUpgrade samba-clientUpgrade python3-samba-testUpgrade samba-dc-libsUpgrade samba-winexeUpgrade samba-common-libsUpgrade samba-winbindUpgrade libnetapi-develUpgrade libldbUpgrade samba-test-libsUpgrade samba-gpupdateUpgrade samba-toolsUpgrade samba-common-toolsUpgrade libnetapiUpgrade samba-dcerpcUpgrade python3-samba-develUpgrade samba-client-libsUpgrade libwbclient-develUpgrade samba-ldb-ldap-modulesUpgrade samba-testUpgrade python3-sambaUpgrade samba-winbind-krb5-locatorUpgrade samba-winbind-modulesUpgrade libldb-develUpgrade python3-ldbUpgrade samba-vfs-iouringUpgrade libsmbclientUpgrade libwbclientUpgrade samba-usersharesUpgrade libsmbclient-develUpgrade samba-libsUpgrade samba-krb5-printing | Jun 3, 2026 | Jun 2, 2026 |
| Alpine Linux | — | Upgrade samba | May 29, 2026 | May 27, 2026 |
| Amazon_linux_2023 | — | Upgrade libwbclient-debuginfoUpgrade libnetapi-develUpgrade samba-test-libs-debuginfoUpgrade samba-vfs-iouring-debuginfoUpgrade samba-test-libsUpgrade libsmbclientUpgrade samba-winbind-clientsUpgrade samba-pidlUpgrade samba-common-libs-debuginfoUpgrade samba-commonUpgrade samba-dc-libs-debuginfoUpgrade python3-samba-dc-debuginfoUpgrade samba-winbind-modulesUpgrade samba-client-libs-debuginfoUpgrade libwbclient-develUpgrade libsmbclient-debuginfoUpgrade python3-samba-develUpgrade samba-toolsUpgrade samba-common-tools-debuginfoUpgrade samba-debuginfoUpgrade python3-samba-testUpgrade libnetapi-debuginfoUpgrade samba-common-libsUpgrade samba-ldb-ldap-modules-debuginfoUpgrade samba-debugsourceUpgrade samba-dcerpcUpgrade samba-dc-libsUpgrade samba-winbind-clients-debuginfoUpgrade samba-krb5-printingUpgrade samba-develUpgrade samba-usersharesUpgrade samba-clientUpgrade samba-winbind-krb5-locator-debuginfoUpgrade samba-winbind-krb5-locatorUpgrade samba-winbindUpgrade samba-client-debuginfoUpgrade samba-client-libsUpgrade samba-ldb-ldap-modulesUpgrade sambaUpgrade samba-common-toolsUpgrade samba-testUpgrade samba-libsUpgrade samba-test-debuginfoUpgrade samba-krb5-printing-debuginfoUpgrade samba-winbind-modules-debuginfoUpgrade samba-vfs-iouringUpgrade python3-samba-debuginfoUpgrade python3-samba-dcUpgrade samba-dcerpc-debuginfoUpgrade samba-libs-debuginfoUpgrade libwbclientUpgrade libnetapiUpgrade python3-sambaUpgrade libsmbclient-develUpgrade samba-winbind-debuginfo | Jul 8, 2026 | May 27, 2026 |
| Debian | — | Upgrade samba | May 27, 2026 | May 27, 2026 |
| Oracle_linux | — | Upgrade samba-krb5-printingUpgrade samba-test-libsUpgrade samba-pidlUpgrade samba-testUpgrade samba-vfs-glusterfsUpgrade samba-toolsUpgrade samba-ldb-ldap-modulesUpgrade samba-client-libsUpgrade python3-sambaUpgrade python3-samba-develUpgrade libnetapi-develUpgrade ctdbUpgrade libwbclientUpgrade samba-winbindUpgrade samba-libsUpgrade samba-clientUpgrade samba-vfs-iouringUpgrade samba-dc-libsUpgrade python3-samba-dcUpgrade samba-common-toolsUpgrade samba-winbind-clientsUpgrade samba-develUpgrade samba-common-libsUpgrade sambaUpgrade samba-winbind-modulesUpgrade python3-samba-testUpgrade samba-winbind-krb5-locatorUpgrade samba-dcerpcUpgrade libsmbclient-develUpgrade libwbclient-develUpgrade libnetapiUpgrade samba-commonUpgrade libsmbclientUpgrade samba-winexeUpgrade samba-usershares | Jun 5, 2026 | May 27, 2026 |
| Redhat Openshift | — | Upgrade ose-rhel-coreos | Aug 10, 2026 | May 27, 2026 |
| Redhat_linux | — | Upgrade python3-ldb-debuginfoUpgrade python3-ldbUpgrade samba-debugsourceUpgrade samba-krb5-printingUpgrade libwbclientUpgrade libnetapi-develUpgrade samba-common-tools-debuginfoUpgrade samba-pidlUpgrade libldbUpgrade samba-test-debuginfoUpgrade libwbclient-debuginfoUpgrade python3-samba-dc-debuginfoUpgrade python3-sambaUpgrade samba-test-libs-debuginfoUpgrade samba-gpupdateUpgrade ldb-toolsUpgrade libnetapi-debuginfoUpgrade samba-testUpgrade samba-common-libs-debuginfoUpgrade python3-samba-develUpgrade samba-test-libsNo solution existsUpgrade samba-winbind-krb5-locator-debuginfoUpgrade samba-winexe-debuginfoUpgrade python3-samba-debuginfoUpgrade samba-ldb-ldap-modules-debuginfoUpgrade samba-dc-libs-debuginfoUpgrade samba-winbind-clientsUpgrade libldb-develUpgrade samba-client-libs-debuginfoUpgrade samba-vfs-iouring-debuginfoUpgrade samba-libsUpgrade libldb-debuginfoUpgrade sambaUpgrade samba-winbind-debuginfoUpgrade samba-common-libsUpgrade ctdbUpgrade samba-libs-debuginfoUpgrade samba-winbind-modulesUpgrade python3-samba-dcUpgrade samba-client-debuginfoUpgrade samba-client-libsUpgrade libnetapiUpgrade ldb-tools-debuginfoUpgrade samba-usersharesUpgrade samba-commonUpgrade python3-samba-testUpgrade samba-dcerpc-debuginfoUpgrade samba-winexeUpgrade samba-debuginfoUpgrade samba-clientUpgrade libsmbclient-develUpgrade samba-winbindUpgrade samba-toolsUpgrade samba-develUpgrade ctdb-debuginfoUpgrade samba-common-toolsUpgrade samba-vfs-iouringUpgrade samba-winbind-modules-debuginfoUpgrade samba-winbind-clients-debuginfoUpgrade libwbclient-develUpgrade libsmbclientUpgrade samba-winbind-krb5-locatorUpgrade samba-krb5-printing-debuginfoUpgrade libsmbclient-debuginfoUpgrade samba-dcerpcUpgrade samba-ldb-ldap-modulesUpgrade samba-dc-libs | Jun 4, 2026 | May 27, 2026 |
| Rocky_linux | — | Upgrade python3-samba-dcUpgrade python3-ldbUpgrade python3-sambaUpgrade samba-common-toolsUpgrade samba-krb5-printing-debuginfoUpgrade samba-libsUpgrade libsmbclient-develUpgrade samba-winbind-clientsUpgrade samba-winbind-clients-debuginfoUpgrade samba-winbind-debuginfoUpgrade python3-ldb-debuginfoUpgrade samba-libs-debuginfoUpgrade samba-winbind-modules-debuginfoUpgrade libnetapiUpgrade samba-krb5-printingUpgrade python3-samba-testUpgrade samba-winexeUpgrade samba-client-debuginfoUpgrade samba-usersharesUpgrade samba-winbindUpgrade libwbclientUpgrade samba-clientUpgrade samba-winbind-krb5-locator-debuginfoUpgrade samba-test-debuginfoUpgrade python3-samba-debuginfoUpgrade samba-dcerpc-debuginfoUpgrade samba-ldb-ldap-modulesUpgrade samba-client-libsUpgrade samba-develUpgrade samba-winbind-krb5-locatorUpgrade sambaUpgrade samba-dc-libs-debuginfoUpgrade samba-dcerpcUpgrade python3-samba-develUpgrade libwbclient-debuginfoUpgrade samba-common-libs-debuginfoUpgrade libldbUpgrade samba-vfs-iouringUpgrade libsmbclientUpgrade ldb-tools-debuginfoUpgrade samba-toolsUpgrade samba-vfs-iouring-debuginfoUpgrade ctdb-debuginfoUpgrade samba-winbind-modulesUpgrade samba-ldb-ldap-modules-debuginfoUpgrade libwbclient-develUpgrade libsmbclient-debuginfoUpgrade samba-debugsourceUpgrade libnetapi-debuginfoUpgrade ldb-toolsUpgrade samba-debuginfoUpgrade samba-common-tools-debuginfoUpgrade samba-common-libsUpgrade samba-testUpgrade samba-winexe-debuginfoUpgrade samba-dc-libsUpgrade python3-samba-dc-debuginfoUpgrade libldb-debuginfoUpgrade ctdbUpgrade libnetapi-develUpgrade libldb-develUpgrade samba-client-libs-debuginfoUpgrade samba-test-libsUpgrade samba-test-libs-debuginfo | Jun 17, 2026 | Jun 13, 2026 |
| Suse | — | Upgrade samba-develUpgrade samba-ad-dc-libsUpgrade samba-ldb-ldapUpgrade samba-winbind-libs-32bitUpgrade samba-libs-python3Upgrade samba-cephUpgrade libsamba-policy-develUpgrade samba-ad-dcUpgrade samba-winbindUpgrade libldb-develUpgrade libldb2Upgrade samba-dcerpcUpgrade samba-docUpgrade samba-winbind-libsUpgrade samba-client-langUpgrade ctdbUpgrade ctdb-pcp-pmdaUpgrade samba-python3Upgrade libsamba-policy0-python3-32bitUpgrade sambaUpgrade samba-libs-32bitUpgrade samba-client-libsUpgrade python3-ldbUpgrade ldb-toolsUpgrade samba-testUpgrade samba-devel-32bitUpgrade samba-winbind-libs-langUpgrade libsamba-policy0-python3Upgrade samba-client-32bitUpgrade samba-client-libs-32bitUpgrade samba-toolUpgrade samba-dsdb-modulesUpgrade samba-gpupdateUpgrade libldb2-32bitUpgrade samba-libsUpgrade samba-libs-python3-32bitUpgrade samba-clientUpgrade libsamba-policy-python3-devel | May 27, 2026 | May 27, 2026 |
| Ubuntu | — | Upgrade samba | May 27, 2026 | May 26, 2026 |
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