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9.8
CVE-2026-76578: Red Hat Enterprise Linux LDAP lets attacker become admin
CVE-2026-76578 · published 1 month ago
Summary
A configuration mistake in the directory service used by Red Hat Enterprise Linux lets anyone connect without logging in and add themselves to the administrators group. This gives a remote attacker full control over the system and any related identity services. Apply the latest security updates from Red Hat as soon as possible to close the gap.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| – | red hat | red hat enterprise linux 10 | All versions |
| – | red hat | red hat enterprise linux 6 | All versions |
| – | red hat | red hat enterprise linux 7 | All versions |
| – | red hat | red hat enterprise linux 8 | All versions |
| – | red hat | red hat enterprise linux 9 | All versions |
| Ubuntu:Pro:14.04:LTS | canonical | freeipa | All versions |
Original advisory text
Ipa: freeipa: freeipa: unauthenticated ldap client can obtain administrator credentials via the self-managed-token aci
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.
References
- https://access.redhat.com/security/cve/CVE-2026-76578
- https://bugzilla.redhat.com/show_bug.cgi?id=2519522
- https://ubuntu.com/security/CVE-2026-76578 Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2026-76578 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:70564
- https://access.redhat.com/errata/RHSA-2026:72279
Internet-facing
3 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically
- Gives an attacker full control
Type
CWE-306Missing Authentication for Critical Function
Timeline
Published7 Sep 2026
Updated12 Oct 2026
First seen8 Sep 2026
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