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CVE-2026-58222— Samba: samba ad ldap compare filter injection and trusted-request confusion disclose protected attributes

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Samba是Samba组织开源的一个适用于 Linux 和 Unix 的标准 Windows 互操作性程序套件。 samba存在输入验证错误漏洞，该漏洞源于结合LDAP filter注入和授权检查不当，导致绕过ACL，泄露机密Active Directory属性，可能导致权限提升和完全域控。

CVSS 8.8 · High EPSS 0.80% · P55

Affected Version Matrix 7

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any unknown
Red Hat Red Hat Enterprise Linux 6 any unknown
any unknown
Red Hat Red Hat Enterprise Linux 7 any unknown
Red Hat Red Hat Enterprise Linux 8 any unknown
Red Hat Red Hat Enterprise Linux 9 any unknown
Red Hat Red Hat OpenShift Container Platform 4 any unknown
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I. Basic Information for CVE-2026-58222

Vulnerability Information
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Vulnerability Title
Samba: samba ad ldap compare filter injection and trusted-request confusion disclose protected attributes
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
LDAP查询中使用的特殊元素转义处理不恰当(LDAP注入)
Source: CVE Program / CVE List V5
Vulnerability Title
samba 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Samba是Samba组织开源的一个适用于 Linux 和 Unix 的标准 Windows 互操作性程序套件。 samba存在输入验证错误漏洞，该漏洞源于结合LDAP filter注入和授权检查不当，导致绕过ACL，泄露机密Active Directory属性，可能导致权限提升和完全域控。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2026-58222

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III. Intelligence Information for CVE-2026-58222

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Patches & Fixes for CVE-2026-58222 (1)

Vendor Advisories for CVE-2026-58222 (3)

Same Patch Batch · Red Hat · 2026-07-30 · 15 CVEs total

CVE-2026-16526 8.8 HIGH Pcp: pcp: privilege escalation to root via linux_sockets pmda vulnerability
CVE-2026-16524 7.8 HIGH Pcp: pcp linux_sockets pmda: arbitrary command execution via command injection
CVE-2026-18381 7.6 HIGH Project-koku/koku-metrics-operator: koku-metrics-operator: operator service-account token
CVE-2026-18378 7.6 HIGH Project-koku/koku-metrics-operator: koku-metrics-operator: cluster pull-secret token exfil
CVE-2026-16529 7.5 HIGH Pcp: pcp: denial of service due to signed integer overflow
CVE-2026-16527 7.3 HIGH Pcp: pcp pmproxy: unauthenticated access to /store endpoint allows bypassing pmcd access r
CVE-2026-18382 6.8 MEDIUM Project-koku/koku-metrics-operator: koku-metrics-operator: service-account client credenti
CVE-2026-16530 6.5 MEDIUM Pcp: pcp: remote denial of service and information leakage
CVE-2026-68562 6.2 MEDIUM Ansible-collection-redhat-leapp: ansible-collection-redhat-leapp: information disclosure v
CVE-2026-18369 5.8 MEDIUM Dogtag-pki: pki-core: redhat-pki: pki: acme http-01 validation ssrf via ip literal identif
CVE-2026-68563 5.5 MEDIUM Ansible-collection-redhat-leapp: ansible-collection-redhat-leapp: information disclosure o
CVE-2026-16531 5.3 MEDIUM Pcp: pcp: arbitrary file creation via path traversal in pmproxy logger servlet
CVE-2026-58218 5.3 MEDIUM Samba: dns signing dos via tkey name cache exhaustion
CVE-2026-58216 5.3 MEDIUM Samba: kpasswd service: kpasswd packet that contains malformed asn.1 might cause the serve

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-90

V. Comments for CVE-2026-58222

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