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HIGHCVE-2026-40698Published Modified CNA f5

CVE-2026-40698: iControl REST and TMSH vulnerability

A vulnerability exists in BIG-IP and BIG-IQ systems where a highly privileged, authenticated attacker with at least the Resource Administrator role can create SNMP configuration objects through iControl REST or the TMOS shell (tmsh) resulting in privilege escalation.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Metrics

CVSS v4.0
8.5
Severity
HIGH
Fixed in
*
Affected Products
2

Fix available

*17.1.3.217.5.1.621.0.0.221.1.0
Patch commits
Affected packages
  • F5 / BIG-IP
    < 21.0.0.2 (from 21.0.0) · < 17.5.1.6 (from 17.5.0) · < 17.1.3.2 (from 17.1.0) · < * (from 16.1.0)
    Fixed in 21.1.0
  • F5 / BIG-IQ
    < * (from 8.4.0)
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
References