High 8.1Published May 13, 2026

CVE-2026-20916BIG-IQ iControl REST vulnerability

Updated under an hour ago (Oct 27, 2026, 9:20 AM ET)

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It affects F5 BIG-IQ and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for F5 BIG-IQ

Exploited in the last 30 days

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.

CVSS: 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: f5
NVD analysis: Analyzed
Record last updated: May 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

F5 BIG-IQ f5:big_iq (from the name)	from 8.4.0 before 8.4.1	CNA record
f5 big-iq_centralized_management f5:big-iq_centralized_management	8.4.0	NVD

References

References

https://my.f5.com/manage/s/article/K000158029	vendor-advisory, patch, mitigation

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.