CVE-2026-20744

Hydro-Québec Le Circuit Electrique charging station backend Improper Access Control

Published Jul 10, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Description
The charging station websocket endpoint accepts connections without
proper authentication, which could lead to privilege escalation.

Remediation

Vendor Solution

Hydro-Québec has updated the majority of charging stations to disable OCPP, mitigating the risk of exploitation. Hydro-Québec has also implemented authentication systems to mitigate the issue for certain charging stations which are still reliant on OCPP. Contact Hydro-Québec with any additional questions.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Hydro-québec
Hydro-québec le Circuit Electrique Charging Station Backend
Vendors & Products Hydro-québec
Hydro-québec le Circuit Electrique Charging Station Backend
Type Values Removed Values Added
Description The charging station websocket endpoint accepts connections without proper authentication, which could lead to privilege escalation.
Title Hydro-Québec Le Circuit Electrique charging station backend Improper Access Control
Weaknesses CWE-284
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Jul 14, 2026, 2:34 PM
Reserved
Jan 27, 2026, 11:33 PM
Status
Deferred
Published
Jul 10, 2026, 11:16 PM
Modified
Oct 25, 2026, 3:10 PM