PT-2026-40653 · F5 · Big-Ip+1

Published 2026-05-13 · Updated 2026-05-17 · CVE-2026-40698

Positive Technologies (AI Summary)

CVSS v3.1

8.7

High

Base vector

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

Name of the Vulnerable Software and Affected Versions BIG-IP versions prior to 17.1.3.2 BIG-IP versions prior to 17.5.1.6 BIG-IP versions prior to 21.0.0.2 BIG-IQ versions prior to 17.1.3.2 BIG-IQ versions prior to 17.5.1.6 BIG-IQ versions prior to 21.0.0.2

Description A privilege escalation issue exists where a highly privileged, authenticated attacker with at least the Resource Administrator role can create SNMP configuration objects. This is achieved through the iControl REST API or the TMOS shell (tmsh), leading to command injection.

Recommendations Update BIG-IP to version 17.1.3.2 or later. Update BIG-IP to version 17.5.1.6 or later. Update BIG-IP to version 21.0.0.2 or later. Update BIG-IQ to version 17.1.3.2 or later. Update BIG-IQ to version 17.5.1.6 or later. Update BIG-IQ to version 21.0.0.2 or later.

Fix

Command Injection

Weakness Enumeration

CWE-77

Related Identifiers

CVE-2026-40698

Affected Products

Big-Ip

Big-Iq

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-40698 · Security Note
• https://twitter.com/f1tym1/status/2055991611545227638 · Twitter Post
• https://my.f5.com/manage/s/article/K000160981 · Patch, Vendor Advisory