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CVE-2026-76578— Ipa: freeipa: freeipa: unauthenticated ldap client can obtain administrator credentials via the self-managed-token aci

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.

FreeIPA 中发现了一个缺陷。其自管理的 OTP（一次性密码）令牌 ACI（访问控制项）既未要求身份验证，也未限制哪些属性可以随令牌条目一起添加。一个未经身份验证的 LDAP 客户端可以利用此漏洞，并结合底层目录服务器在 ACI 评估中的相关缺陷（该缺陷由其他问题单独跟踪），创建一个攻击者任意控制的 Kerberos 主体，并将其添加到管理员组。这使得远程、未经身份验证的攻击者能够获得真实的 FreeIPA 管理员组成员资格，并对目录执行管理操作；在启用 SID 的部署环境中，还可以对其他身份管理（IdM）服务

CVSS 9.8 · Critical

Possible ATT&CK Techniques 1 AI

T1558.004 · AS-REP Roasting

Affected Version Matrix 6

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 any affected
any affected
Red Hat Red Hat Enterprise Linux 9 any affected
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I. Basic Information for CVE-2026-76578

Vulnerability Information
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Vulnerability Title
Ipa: freeipa: freeipa: unauthenticated ldap client can obtain administrator credentials via the self-managed-token aci
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in FreeIPA. The self-managed OTP token ACI does not require authentication and does not restrict which attributes may be added alongside the token entry. An unauthenticated LDAP client can exploit this, combined with a related flaw in the underlying directory server's ACI evaluation (tracked separately), to create an arbitrary attacker-controlled Kerberos principal and have it added to the administrators group. This allows a remote, unauthenticated attacker to obtain genuine FreeIPA administrator-group membership and perform administrative operations against the directory and, on SID-enabled deployments, other IdM services.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

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 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 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-76578

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III. Intelligence Information for CVE-2026-76578

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Vendor Advisories for CVE-2026-76578 (2)

Same Patch Batch · Red Hat · 2026-09-07 · 10 CVEs total

CVE-2026-18922 9.8 CRITICAL 389-ds-base: 389-ds-base: sasl plain authentication allows privilege escalation to directo
CVE-2026-86404 8.8 HIGH Artemis-server: artemis-jms-client: artemis-core-client: undertow-core: wildfly-messaging-
CVE-2026-19843 8.4 HIGH 389-ds-base: 389-ds-base: command injection via unescaped ldap dn in cockpit 389 console l
CVE-2026-79678 8.1 HIGH Freeipa: idm: freeipa: idp-add eval() reachable before authorization check allows environm
CVE-2026-18453 7.5 HIGH 389-ds-base: 389-ds-base: pre-authentication null pointer dereference via paged results an
CVE-2026-18355 7.5 HIGH 389-ds-base: 389-ds-base: heap buffer overflow via sasl wrapped-record length lower-bound
CVE-2026-76560 7.5 HIGH 389-ds-base: 389-ds: anonymous ldap client can defeat selfdn aci bind-rule checks via empt
CVE-2026-86332 6.5 MEDIUM Odh-dashboard: odh-dashboard: nim credential secret readable by any authenticated user
CVE-2026-86469 5.3 MEDIUM Glib2: toctou symlink race in `g_file_create_replace_destination` fallback path

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-306

V. Comments for CVE-2026-76578

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