CVE-2026-20916 BIG-IQ iControl REST vulnerability
Low-privileged authenticated users can create or modify arbitrary files via an undisclosed iControl REST endpoint in BIG-IQ.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20916?
CVE-2026-20916 is a high-severity path traversal vulnerability in F5 Big-Iq Centralized Management, published on 13 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-22
Which versions are affected by CVE-2026-20916?
It affects 1 product.
Products include F5 Big-Iq Centralized Management.
How do I fix CVE-2026-20916?
No fix has been published for CVE-2026-20916 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-20916 being exploited?
There is no known exploitation of CVE-2026-20916 in the wild and no public exploit code.
Other vulnerabilities in F5 Big-Iq Centralized Management
Sources
Also known as GHSA-wph4-q4m8-f794.