High RHSA-2026:26453 1 CVE

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

Published Jun 17, 2026 · Updated Aug 22, 2026

Ecosystem: Red Hat

Fixed packages 5

Release	Package	Fixed in
Red Hat · RHEL 7 ELS rhel_els:7	389-ds-base	0:1.3.11.1-12.el7_9
Red Hat · RHEL 7 ELS rhel_els:7	389-ds-base-debuginfo	0:1.3.11.1-12.el7_9
Red Hat · RHEL 7 ELS rhel_els:7	389-ds-base-devel	0:1.3.11.1-12.el7_9
Red Hat · RHEL 7 ELS rhel_els:7	389-ds-base-libs	0:1.3.11.1-12.el7_9
Red Hat · RHEL 7 ELS rhel_els:7	389-ds-base-snmp	0:1.3.11.1-12.el7_9

Vulnerabilities 1

High 7.5

CVE-2026-9064

389-ds-base: 389-ds-base: unbounded ldap controls count in get_ldapmessage_controls_ext() causes cpu and heap amplification (remote dos)

A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing…

Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 6 Linux Debian Ubuntu

May 20, 2026

References

article
https://access.redhat.com/security/updates/classification/#important
report
https://bugzilla.redhat.com/show_bug.cgi?id=2480093
advisory
https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_26453.json
report
https://access.redhat.com/security/cve/CVE-2026-9064
advisory
https://www.cve.org/CVERecord?id=CVE-2026-9064
advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-9064