CVE-2026-11788
A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before using a BER structure, allowing an unauthenticated remote attacker to crash the LDAP server when the system is under memory pressure.
- Score
- CVSS 3.1 7.5 High
- Status
- Modified - secalert@redhat.com
- Published
- 2026-06-09
- Last modified
- 2026-10-08
- Weaknesses
- CWE-476
Affected products
- 389 Directory Server (Redhat)
- Directory Server (Redhat)
- Directory Server E4s (Redhat)
- Enterprise Linux (Redhat)
- Enterprise Linux Eus (Redhat)
- Rhel Aus (Redhat)
- Rhel E4s (Redhat)
- Rhel Els (Redhat)
- Rhel Eus (Redhat)
- Rhel Eus Long Life (Redhat)
- Rhel Tus (Redhat)
References
- https://access.redhat.com/errata/RHSA-2026:55421
- https://access.redhat.com/errata/RHSA-2026:55422
- https://access.redhat.com/errata/RHSA-2026:55423
- https://access.redhat.com/errata/RHSA-2026:55424
- https://access.redhat.com/errata/RHSA-2026:55425
- https://access.redhat.com/errata/RHSA-2026:55426
- https://access.redhat.com/errata/RHSA-2026:55530
- https://access.redhat.com/errata/RHSA-2026:55532
- https://access.redhat.com/errata/RHSA-2026:55756
- https://access.redhat.com/errata/RHSA-2026:55757
- https://access.redhat.com/errata/RHSA-2026:55758
- https://access.redhat.com/errata/RHSA-2026:55794
- https://access.redhat.com/errata/RHSA-2026:56047
- https://access.redhat.com/errata/RHSA-2026:56048
- https://access.redhat.com/errata/RHSA-2026:56050
- https://access.redhat.com/errata/RHSA-2026:79217
- https://access.redhat.com/security/cve/CVE-2026-11788
- https://bugzilla.redhat.com/show_bug.cgi?id=2485423
