CVE-2026-11789

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.

SeverityMedium

CVSS4.9

Exploit probability—

Product

Redhat Directory Server

PublishedJun 9, 2026

First seenJun 9, 2026

Weakness typeCWE-191CWE-191

How to fix

Vendor advisories

access.redhat.com/security/cve/CVE-2026-11789
bugzilla.redhat.com/show_bug.cgi?id=2485422

Affected products

Product	Affected versions	Fixed in
redhat directory_server	11.0, 12.0, 13.0	—
redhat 389_directory_server	No range specified	—
redhat enterprise_linux	7.0, 8.0, 9.0, 10.0	—

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