CVE-2023-5462Public exploitNetwork attack vector

Controller halt via oversized Modbus/TCP request

Published Oct 9, 2023 · Updated Aug 2, 2024

Denial of service in the XINJE XD5E-30R-E 3.5.3b Modbus handler allows remote attackers to stop the controller via Modbus/TCP. The handler accepts at least 0x58C bytes, turns on the ERR indicator, and stops device operation instead of safely rejecting the oversized data. The interface listens on TCP port 502 by default and requires no authentication, but public evidence does not establish whether recovery requires a reboot or other intervention.

CVSS severity7.5
High
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the XINJE XD5E-30R-E 3.5.3b Modbus handler allows remote attackers to stop the controller via Modbus/TCP. The handler accepts at least 0x58C bytes, turns on the ERR indicator, and stops device operation instead of safely rejecting the oversized data. The interface listens on TCP port 502 by default and requires no authentication, but public evidence does not establish whether recovery requires a reboot or other intervention.

The record

CVE
CVE-2023-5462
Published
Oct 9, 2023
Updated
Aug 2, 2024
Vendor
Wuxi Xinje Electric Co., Ltd.
Product
XD5E-30R-E Firmware
Classifications
CWE-404, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=3.5.3b

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wuxi Xinje Electric Co., Ltd. · XD5E-30R-E Firmwareversion=3.5.3b
Wuxi Xinje Electric Co., Ltd. · XD5E-30R-Eversion=3.5.3b

Published CVSS scores

6.5VulDBCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6.1VulDBAV:A/AC:L/Au:N/C:N/I:N/A:C
7.5NIST NVDCVSS: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.

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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 exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T0814Denial of Service

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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