Medium 5.9Published Jun 9, 2026

CVE-2026-11788389-ds-base: 389-ds-base: null pointer dereference in deref control plugin ber parser

Updated under an hour ago (Oct 27, 2026, 9:50 PM ET)

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It affects Red Hat Directory Server 11.5 E4S for RHEL 8 and 10 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Red Hat Directory Server 11.5 E4S for RHEL 8

Exploited in the last 30 days

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.

CVSS: 5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-476
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Modified
Record last updated: Oct 8, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8 redhat:directory_server_e4s	from 8060020260908152739.0ca98e7e not affected	CNA record
Red Hat Red Hat Directory Server 11.9 for RHEL 8 redhat:directory_server	from 8100020260803140625.37ed7c03 not affected	CNA record
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	from 0:3.2.0-9.el10_2 not affected	CNA record
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus	from 0:3.0.6-20.el10_0 not affected	CNA record
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support redhat:rhel_els	from 0:1.3.11.1-14.el7_9 not affected	CNA record
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support redhat:rhel_aus	from 8040020260803141511.96015a92 not affected	CNA record
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support redhat:rhel_eus_long_life	from 8040020260803141511.96015a92 not affected	CNA record
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service redhat:rhel_e4s	from 8080020260806114228.6dbb3803 not affected	CNA record
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service redhat:rhel_tus	from 8080020260806114228.6dbb3803 not affected	CNA record
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support redhat:rhel_eus	from 0:2.6.1-23.el9_6 not affected	CNA record
1–10 of 13

References

References

https://access.redhat.com/errata/RHSA-2026:55421	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:55422	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:55423	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:55424	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:55425	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:55426	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:55530	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:55532	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:55756	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:55757	vendor-advisory, x-refsource-redhat
1–10 of 18

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.