CVE-2024-0802Network attack vector

Unauthenticated code execution via incorrect pointer scaling

Published Mar 14, 2024 · Updated Aug 1, 2024

Incorrect pointer scaling in Mitsubishi Electric MELSEC-Q/L CPU modules allows remote attackers to read memory or execute code via crafted packets. The vendor identifies incorrect pointer scaling in packet processing but does not disclose the affected protocol, function, or pointer operation. No authentication or user interaction is required, and successful exploitation exposes device memory or executes attacker-controlled code.

CVSS severity9.8
Critical
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect pointer scaling in Mitsubishi Electric MELSEC-Q/L CPU modules allows remote attackers to read memory or execute code via crafted packets. The vendor identifies incorrect pointer scaling in packet processing but does not disclose the affected protocol, function, or pointer operation. No authentication or user interaction is required, and successful exploitation exposes device memory or executes attacker-controlled code.

The record

CVE
CVE-2024-0802
Published
Mar 14, 2024
Updated
Aug 1, 2024
Vendor
Mitsubishi Electric Corporation
Product
MELSEC-L L26CPU-PBT
Classifications
CWE-468, T0866
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <xxxxx26041

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mitsubishi Electric Corporation · MELSEC-L L26CPU-PBTversion=0 <xxxxx26041
Mitsubishi Electric Corporation · MELSEC-Q Series Q04UDPVCPUversion=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-L Series L02CPUversion=The first 5 digits of serial No. "26041" and prior
Mitsubishi Electric Corporation · MELSEC-L Series L26CPU-PBTversion=The first 5 digits of serial No. "26041" and prior
Mitsubishi Electric Corporation · MELSEC-Q Q10UDEHCPUversion=0 <xxxxx26061
Mitsubishi Electric Corporation · MELSEC-Q Series Q50UDEHCPUversion=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-Q Q50UDEHCPUversion=0 <xxxxx26061
Mitsubishi Electric Corporation · MELSEC-Q Series Q06UDEHCPUversion=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-Q Q06UDEHCPUversion=0 <xxxxx26061
Mitsubishi Electric Corporation · MELSEC-Q Series Q10UDEHCPUversion=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-L Series L26CPUversion=The first 5 digits of serial No. "26041" and prior
Mitsubishi Electric Corporation · MELSEC-Q Q100UDEHCPUversion=0 <xxxxx26061
Mitsubishi Electric Corporation · MELSEC-L L26CPU-BTversion=0 <xxxxx26041
Mitsubishi Electric Corporation · MELSEC-L Series L02CPU-Pversion=The first 5 digits of serial No. "26041" and prior
Mitsubishi Electric Corporation · MELSEC-Q Series Q26UDVCPUversion=0 <xxxxx26061; version=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-Q Series Q13UDVCPUversion=0 <xxxxx26061; version=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-L L06CPU-Pversion=0 <xxxxx26041
Mitsubishi Electric Corporation · MELSEC-Q Series Q06UDVCPUversion=0 <xxxxx26061; version=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-Q Series Q13UDEHCPUversion=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-Q Series Q04UDEHCPUversion=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-Q Q20UDEHCPUversion=0 <xxxxx26061
Mitsubishi Electric Corporation · MELSEC-Q Q04UDEHCPUversion=0 <xxxxx26061
Mitsubishi Electric Corporation · MELSEC-Q Series Q03UDVCPUversion=0 <xxxxx26061; version=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-Q Series Q13UDPVCPUversion=0 <xxxxx26061; version=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-L Series L26CPU-Pversion=0 <xxxxx26041; version=The first 5 digits of serial No. "26041" and prior
Mitsubishi Electric Corporation · MELSEC-Q Series Q03UDECPUversion=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-Q Q03UDECPUversion=0 <xxxxx26061
Mitsubishi Electric Corporation · MELSEC-L Series L06CPUversion=The first 5 digits of serial No. "26041" and prior
Mitsubishi Electric Corporation · MELSEC-L Series L26CPU-BTversion=The first 5 digits of serial No. "26041" and prior
Mitsubishi Electric Corporation · MELSEC-Q Series Q04UDVCPUversion=0 <xxxxx26061; version=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-L Series L06CPU-Pversion=0 <xxxxx26041; version=The first 5 digits of serial No. "26041" and prior
Mitsubishi Electric Corporation · MELSEC-Q Series Q06UDPVCPUversion=0 <xxxxx26061; version=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-Q Series Q20UDEHCPUversion=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-Q Series Q26UDPVCPUversion=0 <xxxxx26061; version=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-Q Series Q100UDEHCPUversion=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-Q Series Q26UDEHCPUversion=The first 5 digits of serial No. "26061" and prior
Mitsubishi Electric Corporation · MELSEC-Q Q26UDEHCPUversion=0 <xxxxx26061
Mitsubishi Electric Corporation · MELSEC-L L02CPU-Pversion=0 <xxxxx26041
Mitsubishi Electric Corporation · MELSEC-Q Q13UDEHCPUversion=0 <xxxxx26061
Mitsubishi Electric Corporation · MELSEC-L L26CPU-Pversion=0 <xxxxx26041

Published CVSS scores

9.8Mitsubishi Electric CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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.

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-468Incorrect Pointer Scaling
T0866Exploitation of Remote Services

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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