CVE-2026-42952

Hydro-Québec Le Circuit Electrique charging station backend Improper Restriction of Excessive Authentication Attempts

State: Published
Severity: 8.7 High
Published: Jul 10, 2026
Updated: Jul 14, 2026
Reserved: May 7, 2026

Description

Previously, there was no throttling on repeated authentication attempts to the charging station backend, which could allow an attacker to execute a denial-of-service attack.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N	icscert
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	icscert

Weaknesses

CWE-307

Affected Products

Product	Versions
Le Circuit Electrique charging station backendHydro-Québec	before June_2026Affected

References

https://www.hydroquebec.com/nous-joindre/
https://www.cisa.gov/news-events/ics-advisories/icsa-26-188-01
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-188-01.json

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