CVE-2026-11789Medium· 4.9▾ SunlitA 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 LDA…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 27 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.3%
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.
redhat-ds:11/389-ds-base (all versions)redhat-ds:12/389-ds-base (all versions)389-ds-base (all versions)389-ds-base (all versions)389-ds-base389-ds-base (all versions)389-ds-base (all versions)389-ds-base (all versions)Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Disable nsslapd-allow-hashed-passwords (default: off) to prevent non-DM users from setting pre-hashed passwords. Restrict Directory Manager credentials; limit DM access to management networks and audit DM operations via nsslapd-auditlog. Monitor for suspicious userPassword modifications. Migrate stored passwords from {SMD5} to {PBKDF2_SHA256} to eliminate the vulnerable code path for existing accounts.
Connected by shared product, vendor, weakness, or advisory.
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