CVE-2026-76578

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

State: Published
Severity: 9.8 Critical
Published: Sep 7, 2026
Updated: Nov 2, 2026
Reserved: Aug 19, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	redhat

Weaknesses

CWE-306 Missing Authentication for Critical Functionality

Affected Products

Product	Versions
Red Hat Enterprise Linux 10Red Hat	0:4.13.4-1.el10_2 and laterNot affected
Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat	0:4.12.2-15.el10_0.7 and laterNot affected
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat	0:4.6.8-5.el7_9.25 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	8100020261007071200.143e9e98 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	8100020261007070536.823393f5 and laterNot affected
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat	8040020261027121250.f153676a and laterNot affected
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat	8040020261027121355.5b01ab7e and laterNot affected
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat	8040020261027121250.f153676a and laterNot affected
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat	8040020261027121355.5b01ab7e and laterNot affected
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat	8060020261008134123.c1533a64 and laterNot affected
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat	8060020261008133528.ada582f1 and laterNot affected
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat	8060020261008134123.c1533a64 and laterNot affected
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat	8060020261008133528.ada582f1 and laterNot affected
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat	8080020261007080925.e581a9e4 and laterNot affected
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat	8080020261007071832.b0a6ceea and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat	8080020261007080925.e581a9e4 and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat	8080020261007071832.b0a6ceea and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:4.13.4-1.el9_8 and laterNot affected
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat	0:4.10.1-12.el9_2.7 and laterNot affected
Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat	0:4.11.0-15.el9_4.9 and laterNot affected
Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat	0:4.12.2-14.el9_6.8 and laterNot affected
Red Hat Enterprise Linux 6Red Hat
Red Hat Enterprise Linux 8Red Hat

References

RHSA-2026:70564vendor-advisory
RHSA-2026:72279vendor-advisory
RHSA-2026:82935vendor-advisory
RHSA-2026:83083vendor-advisory
RHSA-2026:83084vendor-advisory
RHSA-2026:83085vendor-advisory
RHSA-2026:83460vendor-advisory
RHSA-2026:83461vendor-advisory
RHSA-2026:89836vendor-advisory
RHSA-2026:93071vendor-advisory
RHSA-2026:93452vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-76578vdb-entry
RHBZ#2519522issue-tracking

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