CWE-307: Improper Restriction of Excessive Authentication Attempts vulnerability exists that would allow an attacker on the local network t…

published 2025-11-12 11 mo ago modified 2026-10-18 21 d ago also EUVD-2025-131907

cvss: 6.9; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 39%
public exploits: 0; none known

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-322-04 updated 2025-11-11 cvss 7.3

Schneider Electric PowerChute Serial Shutdown

Schneider Electric PowerChute™ Serial Shutdown <=1.3
affected: vendor fix se.com
Red Hat Enterprise Linux PowerChute™ Serial Shutdown 1.4 SuSE Linux PowerChute™ Serial Shutdown 1.4 Microsoft Windows PowerChute™ Serial Shutdown 1.4
fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 11 mo ago (2025-11-12)

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	6.9	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CNA	4.0	6.9	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

Schneider Electric PowerChute™ Serial Shutdown

Classification

Weakness

CWE-307 Improper Restriction of Excessive Authentication Attempts

References

download.schneider-electric.com /files?p_Doc_Ref=SEVD-2025-315-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2025-315-01.pdf

Sources

CVE List CVE-2025-11566
NVD CVE-2025-11566

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary