CVE-2026-14940
Severity CVSS v4.0:
Pending analysis
Type:
CWE-122
Heap-based Buffer Overflow
Publication date:
07/07/2026
Last modified:
09/07/2026
Description
A heap-buffer-overflow flaw was found in 389 Directory Server (389-ds-base). When<br />
normalizing a Distinguished Name (DN) that contains a legacy-quoted value encoding a<br />
multivalued nested Relative Distinguished Name (RDN), the server can write past the<br />
end of a heap allocation while sorting RDN attribute-value pairs. An unauthenticated<br />
remote attacker can trigger this condition by sending an LDAP operation whose DN<br />
reaches the DN normalization routine, such as a search with a crafted base DN. This<br />
can corrupt heap memory and may cause denial of service.
Impact
Base Score 3.x
5.30
Severity 3.x
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:redhat:directory_server:11.0:*:*:*:*:*:*:* | ||
| cpe:2.3:a:redhat:directory_server:12.0:*:*:*:*:*:*:* | ||
| cpe:2.3:a:redhat:directory_server:13.0:*:*:*:*:*:*:* | ||
| cpe:2.3:o:redhat:389_directory_server:-:*:*:*:*:*:*:* | ||
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | ||
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | ||
| cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* | ||
| cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page