CVE-2026-26073Network attack vector

Remote service crash via unlocked event-queue insertion

Published Mar 26, 2026 · Updated Mar 26, 2026

Heap corruption in EVerest Core before 2026.02.0 allows remote attackers to crash OCPP 1.6 during concurrent startup events. The powermeter public-key callback inserts into OCPP::event_queue without event_mutex while session and error callbacks concurrently modify the same std::queue-backed container. Exploitation requires OCPP to remain unstarted while those events overlap, and the resulting container corruption interrupts the charging-stack process.

CVSS severity5.9
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap corruption in EVerest Core before 2026.02.0 allows remote attackers to crash OCPP 1.6 during concurrent startup events. The powermeter public-key callback inserts into OCPP::event_queue without event_mutex while session and error callbacks concurrently modify the same std::queue-backed container. Exploitation requires OCPP to remain unstarted while those events overlap, and the resulting container corruption interrupts the charging-stack process.

The record

CVE
CVE-2026-26073
Published
Mar 26, 2026
Updated
Mar 26, 2026
Vendor
EVerest
Product
EVerest Core
Classifications
CWE-122, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 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=< 2026.02.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

EVerest · EVerest Coreversion=< 2026.02.0

Published CVSS scores

5.9GitHub, Inc.CVSS:3.1/AV:N/AC:H/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.

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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-122Heap-based Buffer Overflow
T1499Endpoint Denial of Service

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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