CVE-2025-14905

High

Description

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).

SeverityHigh
CVSS7.2
Exploit probability—
ProductDirectory Server E4s 11.5
PublishedFeb 23, 2026
First seenFeb 23, 2026
Weakness typeCWE-122CWE-122

How to fix

Affected products

ProductAffected versionsFixed in
directory_server_e4s 11.5No range specified—
directory_server_e4s 11.7No range specified—
directory_server 11.9No range specified—
directory_server_e4s 12.2No range specified—
directory_server_eus 12.4No range specified—
Red Hat Red Hat Enterprise Linux 10No range specified—
Red Hat Red Hat Enterprise Linux 10.0 Extended Update SupportNo range specified—
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle SupportNo range specified—
enterprise_linux 8No range specified—
rhel_aus 8.2No range specified—
rhel_aus 8.4No range specified—
rhel_aus 8.6No range specified—
rhel_e4s 8.8No range specified—
enterprise_linux 9No range specified—
rhel_e4s 9.0No range specified—
rhel_e4s 9.2No range specified—
rhel_eus 9.4No range specified—
rhel_eus 9.6No range specified—
directory_server 13.1No range specified—
Red Hat Red Hat Directory Server 12No range specified—
Red Hat Red Hat Directory Server 13No range specified—

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