PT-2026-40633 · F5 · Big-Ip

Published 2026-05-13 · Updated 2026-05-17 · CVE-2026-28758

Positive Technologies (AI Summary)

CVSS v3.1

4.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions F5 BIG-IP versions prior to 17.1.3.1 F5 BIG-IP versions prior to 17.5.1.4

Description When BIG-IP DNS is provisioned, the 'gtm add' and 'bigip add' iControl REST commands return the ssh-password parameter in cleartext within the iControl REST response and record it in the audit log. This allows a highly privileged, authenticated attacker with access to the audit log to view sensitive information.

Recommendations Update to version 17.1.3.1 or later. Update to version 17.5.1.4 or later.

Fix

Cleartext Storage of Sensitive Information

Weakness Enumeration

CWE-312

Related Identifiers

CVE-2026-28758

Affected Products

Big-Ip

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-28758 · Security Note
• https://twitter.com/f1tym1/status/2055947525815673016 · Twitter Post
• https://my.f5.com/manage/s/article/K000158070 · Patch, Vendor Advisory