Improper Restriction of Excessive Authentication Attempts in PowerChute Serial Shutdown - CVE-2025-11566
Published: December 12, 2025
Vulnerability identifier: #VU119888
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-11566
CWE-ID: CWE-307
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to the affected module does not limit the number of password attempts within the /REST/shutdownnow endpoint. A local attacker can perform a brute-force attack and gain access to the user account.
Affected software
PowerChute Serial Shutdown
How to mitigate CVE-2025-11566
Install updates from vendor's website.
PowerChute Serial Shutdown - update to 1.4