CVE-2025-11566Network attack vector

Account takeover via unlimited credential attempts

Published Nov 12, 2025 · Updated Nov 12, 2025

Authentication throttling failure in Schneider Electric PowerChute Serial Shutdown 1.3 and earlier allows remote attackers to access user accounts. The /REST/shutdownnow endpoint accepts an arbitrary number of different credential guesses without enforcing an attempt limit. The web agent must be reachable on the local network; successful guessing grants the targeted account's access and its available shutdown actions.

CVSS severity6.9
Medium
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication throttling failure in Schneider Electric PowerChute Serial Shutdown 1.3 and earlier allows remote attackers to access user accounts. The /REST/shutdownnow endpoint accepts an arbitrary number of different credential guesses without enforcing an attempt limit. The web agent must be reachable on the local network; successful guessing grants the targeted account's access and its available shutdown actions.

The record

CVE
CVE-2025-11566
Published
Nov 12, 2025
Updated
Nov 12, 2025
Vendor
Distributed Data Systems
Product
PowerChute Serial Shutdown
Classifications
CWE-307, T1110.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Versions v1.3 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Distributed Data Systems · PowerChute Serial Shutdownversion=Versions v1.3 and prior

Published CVSS scores

6.9Schneider Electric SECVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
T1110.001Password Guessing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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