What is the CVSS score of CVE-2026-25851?

CVE-2026-25851 has a CVSS 3.1 base score of 9.4 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L. EPSS exploitation probability: 0.1%.

Which versions of Chargemap.Com are affected by CVE-2026-25851?

CVE-2026-25851 allows attackers to bypass authentication on WebSocket endpoints and impersonate legitimate stations to manipulate backend data, posing an immediate risk to data integrity and system…

How to fix or mitigate CVE-2026-25851?

Within 24 hours: Identify all systems running vulnerable WebSocket endpoints and assess their internet exposure; implement emergency network access controls to restrict WebSocket traffic to trusted sources only. Within 7 days: Deploy WAF rules to enforce token validation and rate limiting on WebSocket connections; isolate affected systems on a protected network segment if feasible. Within 30 days: Establish continuous monitoring for suspicious WebSocket activity; work with the vendor on patch timeline; develop and test a deployment plan for the patch once available.

Chargemap.Com CVE-2026-25851

CRITICAL

Missing Authentication for Critical Function (CWE-306)

2026-02-27 ics-cert@hq.dhs.gov

Authentication Bypass Chargemap.Com

9.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.4 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Feb 27, 2026 - 00:16 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.

AnalysisAI

Missing WebSocket authentication vulnerability — same family as CVE-2026-20781 and CVE-2026-24731. Unauthenticated access to WebSocket endpoints enables station impersonation.