CVE-2026-28758: F5 BIG-IP Domain Name System

Medium severity, CVSS 4.4. EPSS: 0.1% chance of exploitation in the next 30 days.

When BIG-IP DNS is provisioned, a vulnerability exists in the gtm_add and bigip_add iControl REST commands that return the ssh-password parameter in cleartext in the iControl REST response and is also logged in the audit log. This may allow a highly privileged, authenticated attacker with access to the audit log to view sensitive information.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Affected products

• F5 BIG-IP Domain Name System: from 16.1.0, up to and including 16.1.6; from 17.1.0, before 17.1.3.1 (fixed in 17.1.3.1); from 17.5.0, up to and including 17.5.1

Published 2026-05-13. Last modified 2026-06-29.