Man-in-the-Middle (MitM) attack in Allen-Bradley MicroLogix 1400 and Micro800 - CVE-2021-32926
Published: May 26, 2021
Vulnerability identifier: #VU53593
CSH Severity: Medium
CVSS v4: 5.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-32926
CWE-ID: CWE-300
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a man-in-the-middle (MitM) attack.
The vulnerability exists due to an issue when an authenticated password change request takes place. A remote attacker can intercept the message that includes the legitimate, new password hash and replace it with an illegitimate hash, leading to denial of service (DoS) condition.
Affected software
Allen-Bradley MicroLogix 1400
Micro800
Micro800
How to mitigate CVE-2021-32926
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.