Buffer overflow in Red Hat Directory Server 11.5 E4s For Rhel 8

CVE-2025-14905

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).

Vulnerability class: Buffer Overflow

EPSS: 0.011 (63.3th percentile) — read the EPSS interpretation.