Dereference Control Flaw in 389 Directory Server by Red Hat
CVE-2026-11788

5.9MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Directory Server 11
Red Hat Directory Server 12
Red Hat Directory Server 13
Red Hat Enterprise Linux 10
Vendor
CVE Published:
9 June 2026

What is CVE-2026-11788?

A vulnerability exists in the 389 Directory Server related to the dereference control plugin, which does not adequately verify allocation failures prior to utilizing a BER structure. This oversight can enable an unauthenticated remote attacker to crash the LDAP server, particularly under conditions of memory strain, potentially leading to significant service interruptions.

References

https://access.redhat.com/security/cve/CVE-2026-11788
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2485423
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.