Which versions of E Mobility are affected by CVE-2026-26051?

CVE-2026-26051 allows attackers to bypass authentication on WebSocket endpoints and impersonate stations or alter backend data without authorization.

How to fix or mitigate CVE-2026-26051?

Within 24 hours: Identify all WebSocket endpoints in production and assess which handle sensitive operations; notify incident response team and relevant business units. Within 7 days: Implement network segmentation to restrict WebSocket access to trusted networks only; deploy WAF rules to enforce authentication tokens; disable non-essential WebSocket features. Within 30 days: Develop and execute a compensating control strategy; coordinate with vendor on patch timeline; conduct security assessment of all affected systems.

E Mobility CVE-2026-26051

Q: What is the CVSS score of CVE-2026-26051?

CVE-2026-26051 has a CVSS 4.0 base score of 9.3 (Critical). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.1%.

CRITICAL

Missing Authentication for Critical Function (CWE-306)

2026-03-06 ics-cert@hq.dhs.gov

Privilege Escalation Authentication Bypass E Mobility

9.3

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

9.3 CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Re-analysis Queued

May 05, 2026 - 18:52 vuln.today

cvss_changed

CVSS changed

May 05, 2026 - 18:52 NVD

9.4 (CRITICAL) 9.3 (CRITICAL)

Analysis Generated

Mar 12, 2026 - 22:06 vuln.today

CVE Published

Mar 06, 2026 - 15:16 nvd

CRITICAL 9.4

DescriptionCVE.org

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.