by Kastro
Paper/Archive/CVE-2026-20744

CVE-2026-20744

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

EPSS 0.8%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 55.2.552 × 2011.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

Affected

ProductAffectedFixed inSource
Le Circuit Electrique charging station backend< June_2026June_2026CNA

Scores by source

icscert (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
icscert (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refhydroquebec.com/nous-joindrerefcisa.gov/news-events/ics-advisories/icsa-26-188-01refgithub.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-188-01.json