CVE-2026-40698 HIGH

CVE-2026-40698: iControl REST and TMSH vulnerability

Vendor F5
Product BIG-IP
Weakness CWE-77
Published May 13, 2026
Last update May 14, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 13, 2026 CVE published
May 14, 2026 Record updated