CVE-2026-73199 Ipa: freeipa: null pointer dereference in `ipa-enrollment` extended operation (`join_oid`) via missing request value
A remote authenticated attacker can crash the FreeIPA server by sending a malformed LDAP request, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73199?
CVE-2026-73199 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 20 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-476
Which versions are affected by CVE-2026-73199?
How do I fix CVE-2026-73199?
No fix has been published for CVE-2026-73199 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-73199 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73199 exists.
Sources
Also known as DEBIAN-CVE-2026-73199, GHSA-mjqg-mjqw-9xv8, UBUNTU-CVE-2026-73199.