CVE-2026-11792 389-ds-base: 389-ds-base: heap buffer overflow in audit log password masking (create_masked_entry_string)
Heap buffer overflow in 389 Directory Server audit logging allows memory corruption and potential code execution when specific password conditions are met.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-11792?
CVE-2026-11792 is a low-severity memory corruption vulnerability in Red Hat Directory Server 11, published on 9 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A heap buffer overflow flaw was found in 389 Directory Server. When audit logging is enabled, the create_masked_entry_string() function in auditlog.c copies a fixed-length password mask into a precisely-sized heap buffer without checking available space. If a short cleartext password is logged (requiring non-default CLEAR password storage or a compromised replication peer), the copy overflows the buffer, corrupting heap memory and audit log output.
Weakness: CWE-122
Which versions are affected by CVE-2026-11792?
How do I fix CVE-2026-11792?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-11792 being exploited?
There is no known exploitation of CVE-2026-11792 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-11792, GHSA-3mr2-rf49-p7w4, UBUNTU-CVE-2026-11792.