CVE-2026-11789 | A flaw was found in 389 Directory Server. The SMD5 password … | CVSS 4.9 MEDIUM

Description

A flaw was found in 389 Directory Server. The SMD5 password storage plugin performs unsigned integer underflow when computing salt length from a crafted password hash shorter than 16 bytes, causing a buffer over-read that crashes the LDAP server during authentication.

Metadata

CVE ID: CVE-2026-11789
State: PUBLISHED
Assigner: redhat
Reserved: 2026-06-09 12:58 UTC
Published: 2026-06-09 13:02 UTC
Last updated: 2026-06-09 16:16 UTC
Primary CWE: CWE-191
Integer Underflow (Wrap or Wraparound)
Vendor / Product: Red Hat / Red Hat Directory Server 11
Sources: cve.org · NVD

Severity & Metrics

4.9 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (8)

Vendor	Product	Platform	Versions
Red Hat	Red Hat Directory Server 11	—	—
Red Hat	Red Hat Directory Server 12	—	—
Red Hat	Red Hat Directory Server 13	—	—
Red Hat	Red Hat Enterprise Linux 10	—	—
Red Hat	Red Hat Enterprise Linux 6	—	—
Red Hat	Red Hat Enterprise Linux 7	—	—
Red Hat	Red Hat Enterprise Linux 8	—	—
Red Hat	Red Hat Enterprise Linux 9	—	—

Weakness (CWE)

CWE	Source	Description
CWE-191	cna	Integer Underflow (Wrap or Wraparound)

CVSS scores (1)

Score	Severity	Version	Source	Vector
4.9	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

References (3)