LDAP Injection Affecting samba package, versions <2:4.22.10+dfsg-0+deb13u2


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.84% (55th percentile)

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  • Snyk IDSNYK-DEBIAN13-SAMBA-18384649
  • published29 Jul 2026
  • disclosed30 Jul 2026

Introduced: 29 Jul 2026

NewCVE-2026-58222  (opens in a new tab)
CWE-90  (opens in a new tab)

How to fix?

Upgrade Debian:13 samba to version 2:4.22.10+dfsg-0+deb13u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream samba package and not the samba package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

A security flaw combining LDAP filter injection and improper authorization checks was found in Samba Active Directory Domain Controller (AD DC). When processing LDAP Compare requests, Samba fails to properly validate user-supplied attribute names and executes the resulting internal database search in a trusted context, bypassing normal Access Control List (ACL) enforcement. An authenticated low-privilege domain user can exploit these flaws to disclose confidential Active Directory attributes that would normally be inaccessible. The disclosed information may be leveraged to derive sensitive authentication material, potentially leading to privilege escalation and complete domain compromise. For example: In deployments configured with Group Managed Service Accounts (gMSAs), an attacker can extract the "msKds-RootKeyData" attribute and derive gMSA passwords offline, potentially leading to complete domain compromise if privileged gMSAs are present.

CVSS Base Scores

version 3.1