CVE-2026-20916 is a vulnerability in F5 Networks
Published on May 13, 2026
BIG-IQ iControl REST vulnerability
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.
Vulnerability Analysis
CVE-2026-20916 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, a high impact on integrity and availability.
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2026-20916 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-20916
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Affected Versions
F5 BIG-IQ:- Version 8.4.0 and below 8.4.1 is affected.