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BIG-IQ CVE-2026-20916

| EUVD-2026-29957 HIGH
Path Traversal (CWE-22)
2026-05-13 f5 GHSA-wph4-q4m8-f794
Path Traversal
7.2
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
Re-analysis Queued
May 13, 2026 - 16:22 vuln.today
cvss_changed
CVSS changed
May 13, 2026 - 16:22 NVD
8.1 (HIGH) 7.2 (HIGH)
Analysis Generated
May 13, 2026 - 15:45 vuln.today
CVE Published
May 13, 2026 - 14:12 nvd
HIGH 8.1

DescriptionNVD

An authenticated iControl REST user with low privileges can create or modify arbitrary files through an undisclosed iControl REST endpoint on the BIG-IQ system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

AnalysisAI

Authenticated low-privilege users can write arbitrary files to the BIG-IQ system filesystem via path traversal in an undisclosed iControl REST endpoint, enabling system compromise through configuration manipulation or code execution. F5 has released patches for supported versions. …

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RemediationAI

Within 24 hours: Identify all F5 BIG-IQ instances in your environment and document current versions. Within 7 days: Apply F5's released patches to all supported BIG-IQ versions; verify patch installation and validate system functionality post-deployment. …

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CVE-2026-20916 vulnerability details – vuln.today
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