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

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (66.5th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-14905: held from 0.011 to 0.012.

EPSS over last 30 days · oldest: 0.011 · newest: 0.012 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-14905?
CVE-2025-14905 is a high-severity vulnerability in Red Hat Directory Server 11.5 E4s For Rhel 8, classified under Heap-based Buffer Overflow. CVSS score: 7.2/10. Published 2026-02-23.
How severe is CVE-2025-14905?
High severity. CVSS v3 base score is 7.2 out of 10.