CVE-2026-14940

A heap-buffer-overflow flaw was found in 389 Directory Server (389-ds-base). When normalizing a Distinguished Name (DN) that contains a legacy-quoted value encoding a multivalued nested Relative Distinguished Name (RDN), the server can write past the end of a heap allocation while sorting RDN attribute-value pairs. An unauthenticated remote attacker can trigger this condition by sending an LDAP operation whose DN reaches the DN normalization routine, such as a search with a crafted base DN. This can corrupt heap memory and may cause denial of service.

• CWE-122

• https://access.redhat.com/security/cve/CVE-2026-14940Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2497697Issue Tracking, Vendor Advisory

Published

Jul 7, 2026

Last Modified

Jul 9, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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