Medium 6.5Published Oct 29, 2026

CVE-2026-117548389-ds-base: 389-ds-base: null pointer dereference via modifydn using an attribute's schema alias name causes denial of service

Updated under an hour ago (Oct 29, 2026, 3:30 PM ET)

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It affects Red Hat Directory Server 11 and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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A NULL pointer dereference flaw was found in 389-ds-base. This flaw occurs when a ModifyDN (rename) operation uses an attribute's schema alias name (such as "commonName") instead of its canonical name (such as "cn") as the new relative distinguished name. An authenticated attacker with the ModifyDN (rename) permission on the affected entry can use this flaw to crash the directory server, causing a denial of service.

CVSS: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-476
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Awaiting Analysis
Record last updated: Oct 29, 2026
First seen by InfoSec Signals: Oct 29, 2026

Affected products

Affected products

Red Hat Red Hat Directory Server 11 redhat:directory_server	11	CNA record
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	10	CNA record

References

References

https://access.redhat.com/security/cve/CVE-2026-117548	vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2561778	issue-tracking, x-refsource-redhat

The CVE record on cve.org NVD's entry

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