CVE-2026-73199
MediumCVSS 6.5Summary
The ipa-enrollment SLAPI plugin in FreeIPA has a null pointer dereference vulnerability. A remote authenticated client can send a malformed LDAP extended operation, omitting the request value for JOIN_OID, causing a server crash and denial of service.
Risk Assessment
An attacker can cause unavailability of the FreeIPA service, potentially disrupting authentication and identity management in the organization.
Recommendation
Upgrade FreeIPA to a patched version and monitor logs for unusual LDAP operations.
Other vulnerabilities in FreeIPA
See all- CVE-2017-11191High
FreeIPA 4.x with API version 2.213 allows remote authenticated users to bypass intended account-locking restrictions via an unlock action with an old session ID (for the same user account) that had been created for an earlier session.
- CVE-2015-5179High
FreeIPA might display user data improperly via vectors involving non-printable characters.
- CVE-2016-7030High
FreeIPA uses a default password policy that locks an account after 5 unsuccessful authentication attempts. This allows remote attackers to cause a denial of service by locking out the account in which system services run on.
- CVE-2016-5414High
FreeIPA version 4.4.0 allows remote attackers to request an arbitrary SAN name for services.
- CVE-2026-11861Critical
A flaw was found in FreeIPA. When a trust relationship is configured with Active Directory, AD users can bypass authentication for FreeIPA services by impersonating a client name in the TGS due to missing PAC certificate verification. This could allow an authenticated AD user to escalate privileges within the FreeIPA domain.
- CVE-2025-4404Critical
A privilege escalation from host to domain vulnerability was found in FreeIPA. The lack of uniqueness validation for the `krbCanonicalName` attribute of the admin account allows creating a service with the same canonical name as the REALM admin. A successful attack lets the attacker obtain a Kerberos ticket with admin@REALM credentials.
- CVE-2015-5284Critical
In FreeIPA before version 4.2.2, the ipa-kra-install script places the CA agent certificate and private key in /etc/httpd/alias/kra-agent.pem, which is world readable.
- CVE-2026-73198High
A flaw in FreeIPA allows a remote unauthenticated attacker to exploit the `/ipa/i18n_messages` endpoint by sending an arbitrarily large request body, causing excessive memory consumption, memory exhaustion, and denial of service.
- CVE-2026-73197High
A flaw in FreeIPA allows a remote unauthenticated attacker to send oversized form POST requests to `/ipa/migration/migration.py`, forcing the migration handler to read attacker-controlled bodies fully into memory, leading to increased memory usage, slower handling, and potential DoS.
- CVE-2026-73196Medium
FreeIPA has a vulnerability due to lack of size limits for OTP key values. A low-privilege authenticated user can submit an oversized OTP key, causing excessive CPU and memory consumption, leading to denial of service.
Original NVD description (English source)
A flaw was found in the `ipa-enrollment` SLAPI plugin. A remote authenticated client can exploit a null pointer dereference vulnerability by sending a malformed Lightweight Directory Access Protocol (LDAP) extended operation. By omitting the request value for the `JOIN_OID` in the `ipa-enrollment` extended operation, an attacker can trigger a server crash, potentially causing a denial of service.