CVE-2026-20781Network attack vector

Unauthenticated station impersonation via unverified WebSocket identifiers

Published Feb 26, 2026 · Updated Feb 26, 2026

Missing authentication in CloudCharge in all versions allows remote attackers to impersonate charging stations through OCPP WebSockets. The endpoint accepts a known or discovered charging station identifier without authenticating the connection, then permits OCPP commands to be sent or received as that charger. Possession or discovery of an identifier is sufficient to manipulate backend data and obtain unauthorized control of charging infrastructure.

CVSS severity9.8
Critical
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in CloudCharge in all versions allows remote attackers to impersonate charging stations through OCPP WebSockets. The endpoint accepts a known or discovered charging station identifier without authenticating the connection, then permits OCPP commands to be sent or received as that charger. Possession or discovery of an identifier is sufficient to manipulate backend data and obtain unauthorized control of charging infrastructure.

The record

CVE
CVE-2026-20781
Published
Feb 26, 2026
Updated
Feb 26, 2026
Vendor
CloudCharge AB
Product
CloudCharge
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CloudCharge AB · CloudChargeversion=All versions

Published CVSS scores

9.4ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
9.3ICS-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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