F5 BIG-IP Appliance Mode Vulnerability_CVE-2026-42919

6.7 / 10

MEDIUM

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

Description

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.

Basic Information

ID CVE-2026-42919

Source f5

Published May 13, 2026 at 14:12

Affected Product

Vendor F5

Product BIG-IP

Version 21.1.0

Affected Versions F5 BIG-IP 21.0.0
F5 BIG-IP 17.5.0
F5 BIG-IP 17.1.0
F5 BIG-IP 16.1.0

CWE Classification

CWE-121

References

my.f5.com /manage/s/article/K000158971

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