CVE-2026-39455

highpriority · track · 0EPSS 0.003 · 23 %ileDEEUNLUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.30% (23rd) EPSS
CVSS 7.5 · high
Is it mine?
124 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · cert_bund · ncsc_nl

EPSS · scored 2026-10-27

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

8.7
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · f5sirt@f5.comexploitability 3.9 · impact 3.6
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · NCSC-NL NL
v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU
v4.08.7highCVSS: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:Xsecondary · f5sirt@f5.com
v4.06.6mediumCVSS: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:U/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:Xsecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-772USCWE-772US
04

affected products (124)

Products and version ranges known to be affected.

showing 20 of 124
05

advisories (2)

Vendor and ecosystem advisories describing this.

  • NCSC-2026-0162Kwetsbaarheden verholpen in F5 BIG-IP en BIG-IQ productenNL2026-05-15csaf · ncsc_nlNL

    F5 heeft meerdere kwetsbaarheden verholpen in de BIG-IP en BIG-IQ productlijnen, inclusief componenten zoals iControl REST, iControl SOAP, TMOS Shell, Traffic Management Microkernel (TMM), Configuration utility, Advanced WAF, ASM, PEM, DNS, Access Policy Manager (APM) en SSL Orchestrator.

  • WID-SEC-W-2026-1532F5 BIG-IP Produkte: Mehrere SchwachstellenDeutsch2026-05-14csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in F5 BIG-IP ausnutzen, um beliebigen Programmcode auszuführen, erweiterte Berechtigungen zu erlangen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcert_bundncsc_nlNVDCVE.orgMITRE
published 2026-05-13modified 2026-10-26
08

references (4)

External citations — patches, advisories, analysis.

scry

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