CVE-2026-11786 389-ds-base: 389-ds-base: heap out-of-bounds read in ldif parser str2entry_state_information_from_type()
An attacker can trigger a heap out-of-bounds read in the LDIF parser during database import, potentially causing a crash or leaking memory.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-11786?
CVE-2026-11786 is a low-severity memory corruption vulnerability in Redhat Enterprise Linux, published on 9 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in 389 Directory Server. The LDIF parser reads past the end of a heap buffer when processing attribute types with trailing semicolons during database import, causing an out-of-bounds read detectable under memory instrumentation.
Weakness: CWE-125
Which versions are affected by CVE-2026-11786?
It affects 3 products.
Products include Redhat 389 Directory Server, Redhat Directory Server, Redhat Enterprise Linux.
How do I fix CVE-2026-11786?
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-2026-11786 being exploited?
There is no known exploitation of CVE-2026-11786 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux
- CVE-2026-11770 389-ds-base: 389-ds-base: pre-auth ldap filter injection in cleanallruv status check
- CVE-2026-15722 Memory corruption in Red Hat Directory Server 11.5 E4S for RHEL 8
- CVE-2026-9064 Denial of service in Red Hat Directory Server 11.5 E4S for RHEL 8
- CVE-2010-2222 Null dereference in Red Hat Directory Server
- CVE-2026-11611 389-ds-base: 389-ds-base: content sync plugin unbounded queue growth and race conditions
Sources
Also known as DEBIAN-CVE-2026-11786, GHSA-8969-43cc-8p5h, UBUNTU-CVE-2026-11786.