VULNERABILITY INTELLIGENCE

CVE-2026-14940

CVSS score5.3 MEDIUM
EPSS probability0.49%
CISA KEVNot currently listed
Published2026-07-07
Last modified2026-07-09
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

Weakness classification

  • secalert@redhat.com: CWE-122

Primary references