Quick answers
- Is CVE-2026-42952 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-42952 being exploited in the wild.
- How severe is CVE-2026-42952?
- High severity, with a CVSS score of 7.5, published 10 July 2026.
- Which products and versions are affected?
- Hydro-Québec Le Circuit Electrique charging station backend Before June 2026.
- Is there a fix for CVE-2026-42952?
- A patch was published on 2026-06-01: Remediation implemented in June 2026 update Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-42952 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-42952?
- Check whether you run Hydro-Québec Le Circuit Electrique charging station backend at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is classified as CWE-307 (Improper Restriction of Excessive Authentication Attempts). The charging station backend failed to implement throttling or rate-limiting on repeated authentication requests. A remote, unauthenticated attacker could exploit this by sending a high volume of authentication attempts to overwhelm the backend resources, resulting in a denial-of-service (DoS). Hydro-Québec has mitigated the issue by disabling the Open Charge Point Protocol (OCPP) on most stations and implementing enhanced authentication for those still requiring it.
Affected products
- Hydro-Québec Le Circuit Electrique charging station backend Before June 2026
Timeline
- 2026-07-07: advisory: Initial release of ICSA-26-188-01 by CISA
- 2026-07-10: disclosed: CVE published to NVD dataset
- 2026-06-01: patched: Remediation implemented in June 2026 update