Local Auth Bypass via Unrestricted Attempts on /REST/shutdownnow
CVE-2025-11566 Published on November 12, 2025
CWE-307: Improper Restriction of Excessive Authentication Attempts vulnerability exists that would allow an attacker on the local network to gain access to the user account by performing an arbitrary number of authentication attempts with different credentials on the /REST/shutdownnow endpoint.
Weakness Type
Improper Restriction of Excessive Authentication Attempts
The software does not implement sufficient measures to prevent multiple failed authentication attempts within in a short time frame, making it more susceptible to brute force attacks.
Products Associated with CVE-2025-11566
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Affected Versions
Schneider Electric PowerChute™ Serial Shutdown Version Versions v1.3 and prior is affected by CVE-2025-11566Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.