Security Advisory

CVE-2026-14940

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-07 13:54:20

Last updated 2026-07-07 15:35:45

Assigner redhat

CVSS score not scored

State PUBLISHED

Description

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.

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