---
id: CVE-2026-39455
title: "When the BIG-IP Configuration utility is configured to use Lightweight Directory Access Protocol (LDAP) authentication, undisclosed traffic can cause the httpd\_process to exhaust the available file descriptors.\_\_Note: Software versions w…"
summary: "When the BIG-IP Configuration utility is configured to use Lightweight Directory Access Protocol (LDAP) authentication, undisclosed traffic can cause the httpd\_process to exhaust the available file descriptors.\_\_Note: Software versions w…"
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-772
published: '2026-05-13'
updated: '2026-06-29'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-39455'
references:
  - url: 'https://my.f5.com/manage/s/article/K000160874'
    label: f5sirt@f5.com
tags:
  - nvd
epss: 0.003
epssPercentile: 0.22886
ingestedAt: '2026-06-29T14:29:18.085Z'
---

## Overview

When the BIG-IP Configuration utility is configured to use Lightweight Directory Access Protocol (LDAP) authentication, undisclosed traffic can cause the httpd process to exhaust the available file descriptors.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.