PT-2026-40656 · F5 · Big-Ip

Published 2026-05-13 · Updated 2026-05-17 · CVE-2026-40703

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions F5 BIG-IP versions prior to 17.1.3.1 F5 BIG-IP versions prior to 17.5.1.4

Description A cross-site request forgery (CSRF) issue exists in the dashboard of the BIG-IP Configuration utility. CSRF is a flaw that allows an attacker to induce a user into performing actions they did not intend to do on a web application where they are currently authenticated.

Recommendations Update to version 17.1.3.1 or later. Update to version 17.5.1.4 or later.

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2026-40703

Affected Products

Big-Ip

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-40703 · Security Note
• https://my.f5.com/manage/s/article/K35544022 · Patch, Vendor Advisory
• https://twitter.com/f1tym1/status/2055991615445959046 · Twitter Post