What’s Vulnerable › Vulnerabilities

CVE-2026-20744: Hydro-Québec Le Circuit Electrique charging station backend Improper Access Control

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-10 · updated 2026-10-25
• Weakness: CWE-284

Description

The charging station websocket endpoint accepts connections without proper authentication, which could lead to privilege escalation.

Affected products

• Hydro-Québec Le Circuit Electrique charging station backend: before June_2026 — fixed in June_2026

How to fix

Upgrade to a fixed version: Hydro-Québec Le Circuit Electrique charging station backend June_2026. Check the vendor advisory for mitigations.

References

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

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