CVE-2022-25922Public exploit

Unauthenticated diagnostic execution via replayed J2497 messages

Published Mar 7, 2022 · Updated Apr 16, 2025

Missing authentication in PLC4TRUCKS J2497 trailer brake controllers allows physically proximate attackers to execute diagnostic functions. The controllers accept replayed J2497 messages as diagnostic commands without authenticating or authorizing the sender. Physical access to the power-line bus is required; disclosed effects include activating solenoid tests and lighting the tractor's trailer ABS fault telltale.

CVSS severity6.1
Medium
EPSS probability1.19%
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 PLC4TRUCKS J2497 trailer brake controllers allows physically proximate attackers to execute diagnostic functions. The controllers accept replayed J2497 messages as diagnostic commands without authenticating or authorizing the sender. Physical access to the power-line bus is required; disclosed effects include activating solenoid tests and lighting the tractor's trailer ABS fault telltale.

The record

CVE
CVE-2022-25922
Published
Mar 7, 2022
Updated
Apr 16, 2025
Vendor
Hegemon Electronics
Product
PLC4TRUCKS
Classifications
CWE-306, T0855
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 7, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record 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=J2497

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Hegemon Electronics · PLC4TRUCKSversion=J2497

Published CVSS scores

6.1CISA ICS-CERTCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/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.

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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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T0855Unauthorized Command Message

Public exploit references

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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