Auth bypass in Switch Ev Swtchenergy.com
CVE-2026-27767
WebSocket endpoints lack proper authentication mechanisms, enabling attackers to perform unauthorized station impersonation and manipulate data sent to the backend. An unauthenticated attacker can connect to the OCPP WebSocket endpoint using a known or discovered charging station identifier, then issue or receive OCPP commands as a legitimate charger. Given that no authentication is required, this can lead to privilege escalation, unauthorized control of charging infrastructure, and corruption of charging network data reported to the backend.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.010 (60.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.010 · change: +0.005
Affected products
- Switch Ev Swtchenergy.com — versions All versions
- Swtchenergy Swtchenergy.com
Weakness classification (CWE)
References
- swtchenergy.com/contact/ (Product)
- www.cisa.gov/news-events/ics-advisories/icsa-26-057-06 (US Government Resource, Third Party Advisory)
- github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-06.js… (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-27767?
- CVE-2026-27767 is a critical-severity vulnerability in Switch Ev Swtchenergy.com, classified under Missing Authentication for Critical Function. CVSS score: 9.4/10. Published 2026-02-27.
- How severe is CVE-2026-27767?
- Critical severity. CVSS v3 base score is 9.4 out of 10.