Dashboard / CVE-2026-39455

CVE-2026-39455

HIGH
MEDIUM Priority: 0.03 BB Relevance: 77/100
Published: 2026-05-13 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: None
VC: None
VI: None
VA: High

Description

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.

Weakness Classification (1)

Affected Software (84)

VendorProductVersion
f5 big-ip_access_policy_manager 17.1.0 – 17.1.3
f5 big-ip_access_policy_manager 17.5.0 – 17.5.1
f5 big-ip_access_policy_manager 16.1.0 – 16.1.6
f5 big-ip_access_policy_manager 21.0.0
f5 big-ip_advanced_firewall_manager 17.1.0 – 17.1.3
f5 big-ip_advanced_firewall_manager 17.5.0 – 17.5.1
f5 big-ip_advanced_firewall_manager 16.1.0 – 16.1.6
f5 big-ip_advanced_firewall_manager 21.0.0
f5 big-ip_advanced_web_application_firewall 17.1.0 – 17.1.3
f5 big-ip_advanced_web_application_firewall 17.5.0 – 17.5.1
f5 big-ip_advanced_web_application_firewall 16.1.0 – 16.1.6
f5 big-ip_advanced_web_application_firewall 21.0.0
f5 big-ip_analytics 17.1.0 – 17.1.3
f5 big-ip_analytics 17.5.0 – 17.5.1
f5 big-ip_analytics 16.1.0 – 16.1.6
f5 big-ip_analytics 21.0.0
f5 big-ip_application_acceleration_manager 17.1.0 – 17.1.3
f5 big-ip_application_acceleration_manager 17.5.0 – 17.5.1
f5 big-ip_application_acceleration_manager 16.1.0 – 16.1.6
f5 big-ip_application_acceleration_manager 21.0.0
f5 big-ip_application_security_manager 17.1.0 – 17.1.3
f5 big-ip_application_security_manager 17.5.0 – 17.5.1
f5 big-ip_application_security_manager 16.1.0 – 16.1.6
f5 big-ip_application_security_manager 21.0.0
f5 big-ip_application_visibility_and_reporting 17.1.0 – 17.1.3
f5 big-ip_application_visibility_and_reporting 17.5.0 – 17.5.1
f5 big-ip_application_visibility_and_reporting 16.1.0 – 16.1.6
f5 big-ip_application_visibility_and_reporting 21.0.0
f5 big-ip_automation_toolchain 17.1.0 – 17.1.3
f5 big-ip_automation_toolchain 17.5.0 – 17.5.1
Showing 30 of 84 entries

References & Advisories (1)

Bug Bounty Relevance

77 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.30%
Raw Score 0.003000
Percentile 22.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00300
2026-10-28
0.00300

Intelligence Sources

nvd ref →

External Links