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.
References
| Link | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-14940 | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2497697 | Issue Tracking Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
09 Jul 2026, 20:20
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Redhat directory Server
Redhat enterprise Linux Redhat 389 Directory Server Redhat |
|
| CPE | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* cpe:2.3:a:redhat:directory_server:12.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:389_directory_server:-:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* cpe:2.3:a:redhat:directory_server:11.0:*:*:*:*:*:*:* cpe:2.3:a:redhat:directory_server:13.0:*:*:*:*:*:*:* |
|
| References | () https://access.redhat.com/security/cve/CVE-2026-14940 - Vendor Advisory | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=2497697 - Issue Tracking, Vendor Advisory |
07 Jul 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-07-07 15:16
Updated : 2026-07-09 20:20
NVD link : CVE-2026-14940
Mitre link : CVE-2026-14940
CVE.ORG link : CVE-2026-14940
JSON object : View
Products Affected
redhat
- directory_server
- 389_directory_server
- enterprise_linux
CWE
CWE-122
Heap-based Buffer Overflow