CVE-2026-42919 MEDIUM

CVE-2026-42919: F5 BIG-IP Appliance Mode Vulnerability

Vendor F5
Product BIG-IP
Weakness CWE-121
Published May 13, 2026
Last update May 14, 2026
View on NVD All CVEs

CVSS base score

6.7/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality Low
Integrity High

CVSS vector

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

What the vulnerability does

01Description

A vulnerability exists in BIG-IP systems that may allow an authenticated attacker with administrative access to escalate their privileges. A successful exploit may allow the attacker to cross a security boundary.  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