RHSA-2026:55422 — Security Advisory

Red Hat Security Advisory: 389-ds-base security update

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Severity

Important

Red Hat Product Security

RHEL 9

Products

Official CSAF product identity

Published · August 17, 2026

Updated · October 23, 2026

Topic

An update for 389-ds-base is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

389 Directory Server is an LDAP version 3 (LDAPv3) compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.

Security Fix(es):

389-ds-base: 389-ds-base: pre-auth LDAP filter injection in CleanAllRUV status check (CVE-2026-11770)
389-ds-base: 389-ds-base: NULL pointer dereference in deref control plugin BER parser (CVE-2026-11788)
389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in get_ruvelement_from_berval() via unbounded replica ID parsing (CVE-2026-15722)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.