BIG-IP - Authentication Bypass (CVE-2022-1388)

CVE-2022-1388 is a critical vulnerability in F5 BIG-IP that enables attackers to bypass iControl REST authentication through specially crafted requests, potentially leading to remote code execution on affected systems.

CrowdSec has been tracking this vulnerability and its exploits since 1st of April 2025.

CrowdSec network data shows that most actors exploiting CVE-2022-1388 rely on broad, untargeted scans with minimal filtering. The activity is largely automated and opportunistic in nature. Data from the CrowdSec community also indicates a gradual decrease in attacks targeting CVE-2022-1388. While still present in the wild, exploitation levels have dropped noticeably week-over-week. This may signal that the vulnerability is becoming less relevant or that defenses are improving fast enough for attackers to lose interest.

Exploitation attempts are generally focused on requests to the /mgmt/tm/util/bash endpoint.