Unauthorized Access Vulnerability in FreeIPA Affected by Red Hat
CVE-2026-76578

9.8CRITICAL

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 10.0 Extended Update Support
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Vendor
CVE Published:
7 September 2026

What is CVE-2026-76578?

A security flaw in FreeIPA allows an unauthenticated LDAP client to exploit the self-managed OTP token Access Control Instructions (ACI). This lack of authentication and attribute restriction can lead to the creation of a malicious Kerberos principal, which can then be added to the administrators group. Consequently, this may enable a remote attacker to gain unauthorized administrative access to FreeIPA, potentially compromising directory operations and other identity management services in systems utilizing SID.

Affected Version(s)

Red Hat Enterprise Linux 10 0:4.13.4-1.el10_2

Red Hat Enterprise Linux 10.0 Extended Update Support 0:4.12.2-15.el10_0.7

Red Hat Enterprise Linux 8 8100020261007071200.143e9e98

References

https://access.redhat.com/errata/RHSA-2026:70564
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72279
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:82935
vendor-advisoryx_refsource_REDHAT

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Gia Bui (yabeow) (Calif.io) for reporting this issue.
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