SB2026051439 - Local information disclosure in BIG-IP DNS tmsh
Published: May 14, 2026
Security Bulletin ID
SB2026051439
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Cleartext storage of sensitive information (CVE-ID: CVE-2026-42408)
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.
Remediation
Install update from vendor's website.