CVE-2026-42930

Appliance mode iControl REST vulnerability

At a glance

Severity
HIGH 8.5
EPSS
EPSS 0.48 % · percentile 41 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
f5
NVD status
Undergoing Analysis

Description

When running in Appliance mode, an authenticated attacker assigned the 'Administrator' role may be able to bypass Appliance mode restrictions on a BIG-IP system.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 8.7CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Nf5
CVSS 4.0HIGH 8.5CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:Nf5
CVSS 4.0HIGH 8.5CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/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:XNVD · f5sirt@f5.com (Secondary)
CVSS 3.1HIGH 8.7CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:NNVD · f5sirt@f5.com (Secondary)

Weaknesses (CWE)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
F5 · BIG-IPunaffected 21.1.0 < * ; affected 21.0.0 < 21.0.0.2 ; affected 17.5.0 < 17.5.1.6 ; affected 17.1.0 < 17.1.3.2 ; affected 16.1.0 < *

References

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD