Critical severity · published Feb 26, 2026
CVE-2026-27767
SWITCH EV swtchenergy.com Missing Authentication for Critical Function
9.8
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SW
swtchenergy.com · SWITCH EV
All versions · source: vendor, NVD
In the news
AdvisoryCritical
SWITCH EV swtchenergy.com
View CSAF Summary Successful exploitation of these vulnerabilities could allow attackers to impersonate charging stations, hijack sessions, suppress or misroute legitimate traffic to cause large-scale denial of service, and manipulate data sent to the backend. The following versions of SWITCH EV swtchenergy.com are affected: swtchenergy.com vers:all/* (CVE-2026-27767, CVE-2026-25113, CVE-2026-25778, CVE-2026-27773) CVSS Vendor Equipment Vulnerabilities v3 9.4 SWITCH EV SWITCH EV swtchenergy.com Missing Authentication for Critical Function, Improper Restriction of Excessive Authentication Attempts, Insufficient Session Expiration, Insufficiently Protected Credentials Background Critical Infrastructure Sectors: Energy, Transportation Systems Countries/Areas Deployed: Worldwide Company Headquarters Location: United States Vulnerabilities Expand All + 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 reporte...
Feb 26, 2026·CISA Advisories
Affected product
SW
swtchenergy.com
SWITCH EV
More from swtchenergy.com
9.8
CVE-2026-25113
SWITCH EV swtchenergy.com Improper Restriction of Excessive Authentication Attempts
7.5
CVE-2026-25778
SWITCH EV swtchenergy.com Insufficient Session Expiration
5.3
CVE-2026-27773
SWITCH EV swtchenergy.com Insufficiently Protected Credentials