CVE-2026-24445Network attack vector

Telemetry disruption via unrestricted WebSocket authentication attempts

Published Feb 27, 2026 · Updated Feb 27, 2026

Improper restriction of authentication attempts in all ev.energy versions allows remote attackers to interrupt charger telemetry. The WebSocket API accepts an unrestricted number of authentication requests because it applies no rate limit, enabling request floods and credential guessing. No credentials or user interaction are required; abuse can suppress or mis-route legitimate telemetry, while brute force can gain unauthorized access.

CVSS severity8.7
High
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper restriction of authentication attempts in all ev.energy versions allows remote attackers to interrupt charger telemetry. The WebSocket API accepts an unrestricted number of authentication requests because it applies no rate limit, enabling request floods and credential guessing. No credentials or user interaction are required; abuse can suppress or mis-route legitimate telemetry, while brute force can gain unauthorized access.

The record

CVE
CVE-2026-24445
Published
Feb 27, 2026
Updated
Feb 27, 2026
Vendor
ev.energy
Product
ev.energy
Classifications
CWE-307, CAPEC-49, T1499.003, T1110
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 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?

ev.energy · ev.energyversion=All versions

Published CVSS scores

8.7ICS-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
CAPEC-49Password Brute Forcing
T1499.003Application Exhaustion Flood
T1110Brute Force

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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