Cleartext storage of sensitive information in BIG-IP - CVE-2026-42408
Published: May 14, 2026
Vulnerability identifier: #VU131403
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-42408
CWE-ID: CWE-312
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: F5 Networks
Affected software:
BIG-IP
BIG-IP
Detailed vulnerability description
The vulnerability allows a local privileged user to disclose sensitive information.
The vulnerability exists due to cleartext storage of sensitive information in the TMOS Shell (tmsh) command line history and audit log when executing a tmsh command. A local privileged user can run a tmsh command to disclose sensitive information.
Only systems with BIG-IP DNS provisioned are vulnerable. There is no data plane exposure; this is a control plane issue only.
How to mitigate CVE-2026-42408
Install security update from vendor's website.