CVE-2025-68138

Service interruption via unreleased websocket allocations

Published Jan 21, 2026 · Updated Jan 21, 2026

Resource exhaustion in EVerest Core with libocpp before 0.30.1 allows remote attackers to interrupt charging services. WebsocketLibwebsockets::thread_websocket_client_loop repeatedly duplicates the CSMS hostname, charge-point path, and protocol string without freeing the heap allocations. Reachability requires failed or frequent OCPP reconnects from an adjacent network position; sustained attempts exhaust memory and stop the charging software.

CVSS severity4.7
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in EVerest Core with libocpp before 0.30.1 allows remote attackers to interrupt charging services. WebsocketLibwebsockets::thread_websocket_client_loop repeatedly duplicates the CSMS hostname, charge-point path, and protocol string without freeing the heap allocations. Reachability requires failed or frequent OCPP reconnects from an adjacent network position; sustained attempts exhaust memory and stop the charging software.

The record

CVE
CVE-2025-68138
Published
Jan 21, 2026
Updated
Jan 21, 2026
Vendor
EVerest
Product
EVerest Core
Classifications
CWE-770, T1499.003
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 21, 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=libocpp < 0.30.1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

EVerest · EVerest Coreversion=libocpp < 0.30.1

Published CVSS scores

4.7GitHub, Inc.CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.003Application Exhaustion Flood

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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