A flaw was found in the 389-ds-base server. A heap buffer overflow vulnerability exists in the `schema_attr_enum_callback` function within the `schema.c` file. This occurs because the code incorrectly calculates the buffer size by summing alias string lengths without accounting for additional formatting characters. When a large number of aliases are processed, this oversight can lead to a heap overflow, potentially allowing a remote attacker to cause a Denial of Service (DoS) or achieve Remote Code Execution (RCE).

The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-3208 advisory.

    - Resolves: RHEL-137071 - CVE-2025-14905 389-ds-base: Remote Code Execution       and Denial of Service via heap buffer overflow [rhel-10.1.z]

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:3189 advisory.

    389 Directory Server is an LDAP version 3 (LDAPv3) compliant server. The base packages include the     Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.

    Security Fix(es):

    * 389-ds-base: 389-ds-base: Remote Code Execution and Denial of Service via heap buffer overflow     (CVE-2025-14905)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in the 389-ds-base server. A heap buffer overflow vulnerability exists in the     `schema_attr_enum_callback` function within the `schema.c` file. This occurs because the code incorrectly     calculates the buffer size by summing alias string lengths without accounting for additional formatting     characters. When a large number of aliases are processed, this oversight can lead to a heap overflow,     potentially allowing a remote attacker to cause a Denial of Service (DoS) or achieve Remote Code Execution     (RCE). (CVE-2025-14905)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
299916	Oracle Linux 10 : 389-ds-base (ELSA-2026-3208)	Nessus	Oracle Linux Local Security Checks	high
299857	RHEL 9 : 389-ds-base (RHSA-2026:3189)	Nessus	Red Hat Local Security Checks	high
299805	Linux Distros Unpatched Vulnerability : CVE-2025-14905	Nessus	Misc.	critical

Detections

Analytics

CVE-2025-14905

high

Tenable Plugins

high

high

critical