A flaw was found in Samba Active Directory Domain Controller (AD DC). Improper authorization checks allow an authenticated low-privilege domain user to modify internal LDB special records through LDAP. By altering the DSDB module configuration, an attacker can bypass directory ACL enforcement on new LDAP connections and elevate privileges, potentially leading to complete domain compromise.

Project Subscriptions

Vendors Products
Advisories
Source ID Title
Debian DSA Debian DSA DSA-6401-1 samba security update
Ubuntu USN Ubuntu USN USN-8621-1 Samba vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 31 Jul 2026 02:15:00 +0000

Type Values Removed Values Added
First Time appeared Samba
Samba samba
Vendors & Products Samba
Samba samba

Fri, 31 Jul 2026 00:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in Samba Active Directory Domain Controller (AD DC). Improper authorization checks allow an authenticated low-privilege domain user to modify internal LDB special records through LDAP. By altering the DSDB module configuration, an attacker can bypass directory ACL enforcement on new LDAP connections and elevate privileges, potentially leading to complete domain compromise.
Title samba: authenticated LDAP access to internal LDB special DNs permits domain takeover
Weaknesses CWE-284
References
Metrics threat_severity

None

cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Important


Projects

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cve-icon MITRE

No data.

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

Severity : Important

Publid Date: 2026-07-28T10:00:00Z

Links: CVE-2026-58221 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T18:45:04Z

Weaknesses