PT-2026-40662 · F5 · Big-Ip

Published 2026-05-13 · Updated 2026-05-17 · CVE-2026-41953

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 F5 BIG-IP versions prior to 17.1.3.2 F5 BIG-IP versions prior to 17.5.1.6 F5 BIG-IP versions prior to 21.0.0.2

Description A configuration command injection issue exists where a highly privileged, authenticated attacker with at least the Resource Administrator role can modify configuration objects. This can lead to privilege escalation.

Recommendations Update to version 17.1.3.2 or later. Update to version 17.5.1.6 or later. Update to version 21.0.0.2 or later.

Fix

Command Injection

Weakness Enumeration

CWE-77

Related Identifiers

CVE-2026-41953

Affected Products

Big-Ip

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-41953 · Security Note
• https://my.f5.com/manage/s/article/K000160975 · Patch, Vendor Advisory
• https://twitter.com/f1tym1/status/2056002976381059090 · Twitter Post