CVE-2021-20588
Improper handling of length parameter inconsistency vulnerability in Mitsubishi Electric FA...
Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric FA Engineering Software (CPU Module Logging Configuration Tool versions 1.112R and prior, CW Configurator versions 1.011M and prior, Data Transfer versions 3.44W and prior, EZSocket versions 5.4 and prior, FR Configurator all versions, FR Configurator SW3 all versions, FR Configurator2 versions 1.24A and prior, GT Designer3 Version1(GOT1000) versions 1.250L and prior, GT Designer3 Version1(GOT2000) versions 1.250L and prior, GT SoftGOT1000 Version3 versions 3.245F and prior, GT SoftGOT2000 Version1 versions 1.250L and prior, GX Configurator-DP versions 7.14Q and prior, GX Configurator-QP all versions, GX Developer versions 8.506C and prior, GX Explorer all versions, GX IEC Developer all versions, GX LogViewer versions 1.115U and prior, GX RemoteService-I all versions, GX Works2 versions 1.597X and prior, GX Works3 versions 1.070Y and prior, iQ Monozukuri ANDON (Data Transfer) versions 1.003D and prior, iQ Monozukuri Process Remote Monitoring (Data Transfer) versions 1.002C and prior, M_CommDTM-HART all versions, M_CommDTM-IO-Link versions 1.03D and prior, MELFA-Works versions 4.4 and prior, MELSEC WinCPU Setting Utility all versions, MELSOFT EM Software Development Kit (EM Configurator) versions 1.015R and prior, MELSOFT Navigator versions 2.74C and prior, MH11 SettingTool Version2 versions 2.004E and prior, MI Configurator versions 1.004E and prior, MT Works2 versions 1.167Z and prior, MX Component versions 5.001B and prior, Network Interface Board CC IE Control utility versions 1.29F and prior, Network Interface Board CC IE Field Utility versions 1.16S and prior, Network Interface Board CC-Link Ver.2 Utility versions 1.23Z and prior, Network Interface Board MNETH utility versions 34L and prior, PX Developer versions 1.53F and prior, RT ToolBox2 versions 3.73B and prior, RT ToolBox3 versions 1.82L and prior, Setting/monitoring tools for the C Controller module (SW4PVC-CCPU) versions 4.12N and prior, and SLMP Data Collector versions 1.04E and prior) allows a remote unauthenticated attacker to cause a DoS condition on the software products, and possibly to execute a malicious code on the personal computer running the software products although it has not been reproduced, by spoofing MELSEC, GOT or FREQROL and returning crafted reply packets.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
7.5
Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric FA Engineering Software (CPU Module Logging Configuration Tool versions 1.112R and prior, CW Configurator versions 1.011M and prior, Data Transfer versions 3.44W and prior, EZSocket versions 5.4 and prior, FR Configurator all versions, FR Configurator SW3 all versions, FR Configurator2 versions 1.24A and prior, GT Designer3 Version1(GOT1000) versions 1.250L and prior, GT Designer3 Version1(GOT2000) versions 1.250L and prior, GT SoftGOT1000 Version3 versions 3.245F and prior, GT SoftGOT2000 Version1 versions 1.250L and prior, GX Configurator-DP versions 7.14Q and prior, GX Configurator-QP all versions, GX Developer versions 8.506C and prior, GX Explorer all versions, GX IEC Developer all versions, GX LogViewer versions 1.115U and prior, GX RemoteService-I all versions, GX Works2 versions 1.597X and prior, GX Works3 versions 1.070Y and prior, iQ Monozukuri ANDON (Data Transfer) versions 1.003D and prior, iQ Monozukuri Process Remote Monitoring (Data Transfer) versions 1.002C and prior, M_CommDTM-HART all versions, M_CommDTM-IO-Link versions 1.03D and prior, MELFA-Works versions 4.4 and prior, MELSEC WinCPU Setting Utility all versions, MELSOFT EM Software Development Kit (EM Configurator) versions 1.015R and prior, MELSOFT Navigator versions 2.74C and prior, MH11 SettingTool Version2 versions 2.004E and prior, MI Configurator versions 1.004E and prior, MT Works2 versions 1.167Z and prior, MX Component versions 5.001B and prior, Network Interface Board CC IE Control utility versions 1.29F and prior, Network Interface Board CC IE Field Utility versions 1.16S and prior, Network Interface Board CC-Link Ver.2 Utility versions 1.23Z and prior, Network Interface Board MNETH utility versions 34L and prior, PX Developer versions 1.53F and prior, RT ToolBox2 versions 3.73B and prior, RT ToolBox3 versions 1.82L and prior, Setting/monitoring tools for the C Controller module (SW4PVC-CCPU) versions 4.12N and prior, and SLMP Data Collector versions 1.04E and prior) allows a remote unauthenticated attacker to cause a DoS condition on the software products, and possibly to execute a malicious code on the personal computer running the software products although it has not been reproduced, by spoofing MELSEC, GOT or FREQROL and returning crafted reply packets.
- Record
CVE-2021-20588- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-130
- Updated
- 2026-11-02
EUVDEUVD-2021-8006
7.5
Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric FA Engineering Software (CPU Module Logging Configuration Tool versions 1.112R and prior, CW Configurator versions 1.011M and prior, Data Transfer versions 3.44W and prior, EZSocket versions 5.4 and prior, FR Configurator all versions, FR Configurator SW3 all versions, FR Configurator2 versions 1.24A and prior, GT Designer3 Version1(GOT1000) versions 1.250L and prior, GT Designer3 Version1(GOT2000) versions 1.250L and prior, GT SoftGOT1000 Version3 versions 3.245F and prior, GT SoftGOT2000 Version1 versions 1.250L and prior, GX Configurator-DP versions 7.14Q and prior, GX Configurator-QP all versions, GX Developer versions 8.506C and prior, GX Explorer all versions, GX IEC Developer all versions, GX LogViewer versions 1.115U and prior, GX RemoteService-I all versions, GX Works2 versions 1.597X and prior, GX Works3 versions 1.070Y and prior, iQ Monozukuri ANDON (Data Transfer) versions 1.003D and prior, iQ Monozukuri Process Remote Monitoring (Data Transfer) versions 1.002C and prior, M_CommDTM-HART all versions, M_CommDTM-IO-Link versions 1.03D and prior, MELFA-Works versions 4.4 and prior, MELSEC WinCPU Setting Utility all versions, MELSOFT EM Software Development Kit (EM Configurator) versions 1.015R and prior, MELSOFT Navigator versions 2.74C and prior, MH11 SettingTool Version2 versions 2.004E and prior, MI Configurator versions 1.004E and prior, MT Works2 versions 1.167Z and prior, MX Component versions 5.001B and prior, Network Interface Board CC IE Control utility versions 1.29F and prior, Network Interface Board CC IE Field Utility versions 1.16S and prior, Network Interface Board CC-Link Ver.2 Utility versions 1.23Z and prior, Network Interface Board MNETH utility versions 34L and prior, PX Developer versions 1.53F and prior, RT ToolBox2 versions 3.73B and prior, RT ToolBox3 versions 1.82L and prior, Setting/monitoring tools for the C Controller module (SW4PVC-CCPU) versions 4.12N and prior, and SLMP Data Collector versions 1.04E and prior) allows a remote unauthenticated attacker to cause a DoS condition on the software products, and possibly to execute a malicious code on the personal computer running the software products although it has not been reproduced, by spoofing MELSEC, GOT or FREQROL and returning crafted reply packets.
- Record
EUVD-2021-8006- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-29pr-6732-fx67
9.8
Improper handling of length parameter inconsistency vulnerability in Mitsubishi Electric FA...
Improper handling of length parameter inconsistency vulnerability in Mitsubishi Electric FA Engineering Software(C Controller module setting and monitoring tool all versions, CPU Module Logging Configuration Tool all versions, CW Configurator all versions, Data Transfer all versions, EZSocket all versions, FR Configurator all versions, FR Configurator SW3 all versions, FR Configurator2 all versions, GT Designer3 Version1(GOT1000) all versions, GT Designer3 Version1(GOT2000) all versions, GT SoftGOT1000 Version3 all versions, GT SoftGOT2000 Version1 all versions, GX Configurator-DP versions 7.14Q and prior, GX Configurator-QP all versions, GX Developer all versions, GX Explorer all versions, GX IEC Developer all versions, GX LogViewer all versions, GX RemoteService-I all versions, GX Works2 versions 1.597X and prior, GX Works3 versions 1.070Y and prior, M_CommDTM-HART all versions, M_CommDTM-IO-Link all versions, MELFA-Works all versions, MELSEC WinCPU Setting Utility all versions, MELSOFT EM Software Development Kit (EM Configurator) all versions, MELSOFT Navigator all versions, MH11 SettingTool Version2 all versions, MI Configurator all versions, MT Works2 all versions, MX Component all versions, Network Interface Board CC IE Control utility all versions, Network Interface Board CC IE Field Utility all versions, Network Interface Board CC-Link Ver.2 Utility all versions, Network Interface Board MNETH utility all versions, PX Developer all versions, RT ToolBox2 all versions, RT ToolBox3 all versions, Setting/monitoring tools for the C Controller module all versions, SLMP Data Collector all versions) allows a remote unauthenticated attacker to cause a DoS condition of the software products, and possibly to execute a malicious program on the personal computer running the software products although it has not been reproduced, by spoofing MELSEC, GOT or FREQROL and returning crafted reply packets.
- Record
GHSA-29pr-6732-fx67- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-119, CWE-130, CWE-755
- Updated
- 2026-11-02
NVD
7.5
Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric FA Engineering Software (CPU Module Logging Configuration Tool versions 1.112R and prior, CW Configurator versions 1.011M and prior, Data Transfer versions 3.44W and prior, EZSocket versions 5.4 and prior, FR Configurator all versions, FR Configurator SW3 all versions, FR Configurator2 versions 1.24A and prior, GT Designer3 Version1(GOT1000) versions 1.250L and prior, GT Designer3 Version1(GOT2000) versions 1.250L and prior, GT SoftGOT1000 Version3 versions 3.245F and prior, GT SoftGOT2000 Version1 versions 1.250L and prior, GX Configurator-DP versions 7.14Q and prior, GX Configurator-QP all versions, GX Developer versions 8.506C and prior, GX Explorer all versions, GX IEC Developer all versions, GX LogViewer versions 1.115U and prior, GX RemoteService-I all versions, GX Works2 versions 1.597X and prior, GX Works3 versions 1.070Y and prior, iQ Monozukuri ANDON (Data Transfer) versions 1.003D and prior, iQ Monozukuri Process Remote Monitoring (Data Transfer) versions 1.002C and prior, M_CommDTM-HART all versions, M_CommDTM-IO-Link versions 1.03D and prior, MELFA-Works versions 4.4 and prior, MELSEC WinCPU Setting Utility all versions, MELSOFT EM Software Development Kit (EM Configurator) versions 1.015R and prior, MELSOFT Navigator versions 2.74C and prior, MH11 SettingTool Version2 versions 2.004E and prior, MI Configurator versions 1.004E and prior, MT Works2 versions 1.167Z and prior, MX Component versions 5.001B and prior, Network Interface Board CC IE Control utility versions 1.29F and prior, Network Interface Board CC IE Field Utility versions 1.16S and prior, Network Interface Board CC-Link Ver.2 Utility versions 1.23Z and prior, Network Interface Board MNETH utility versions 34L and prior, PX Developer versions 1.53F and prior, RT ToolBox2 versions 3.73B and prior, RT ToolBox3 versions 1.82L and prior, Setting/monitoring tools for the C Controller module (SW4PVC-CCPU) versions 4.12N and prior, and SLMP Data Collector versions 1.04E and prior) allows a remote unauthenticated attacker to cause a DoS condition on the software products, and possibly to execute a malicious code on the personal computer running the software products although it has not been reproduced, by spoofing MELSEC, GOT or FREQROL and returning crafted reply packets.
- Record
CVE-2021-20588- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-130, CWE-119
- Updated
- 2026-11-02
Affected products
- mitsubishi electric corporation cpu module logging configuration tool
- mitsubishi electric corporation cw configurator
- mitsubishi electric corporation data transfer
- mitsubishi electric corporation ezsocket
- mitsubishi electric corporation fr configurator
- mitsubishi electric corporation fr configurator sw3
- mitsubishi electric corporation fr configurator2
- mitsubishi electric corporation gt designer3 version1(got1000)
- mitsubishi electric corporation gt designer3 version1(got2000)
- mitsubishi electric corporation gt softgot1000 version3
- mitsubishi electric corporation gt softgot2000 version1
- mitsubishi electric corporation gx configurator-dp
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- mitsubishi electric corporation gx configurator-qp
- mitsubishi electric corporation gx developer
- mitsubishi electric corporation gx explorer
- mitsubishi electric corporation gx iec developer
- mitsubishi electric corporation gx logviewer
- mitsubishi electric corporation gx remoteservice-i
- mitsubishi electric corporation gx works2
- mitsubishi electric corporation gx works3
- mitsubishi electric corporation iq monozukuri andon (data transfer)
- mitsubishi electric corporation iq monozukuri process remote monitoring (data transfer)
- mitsubishi electric corporation melfa-works
- mitsubishi electric corporation melsec wincpu setting utility
- mitsubishi electric corporation melsoft em software development kit (em configurator)
- mitsubishi electric corporation melsoft navigator
- mitsubishi electric corporation mh11 settingtool version2
- mitsubishi electric corporation mi configurator
- mitsubishi electric corporation mt works2
- mitsubishi electric corporation mx component
- mitsubishi electric corporation network interface board cc ie control utility
- mitsubishi electric corporation network interface board cc ie field utility
- mitsubishi electric corporation network interface board cc-link ver.2 utility
- mitsubishi electric corporation network interface board mneth utility
- mitsubishi electric corporation px developer
- mitsubishi electric corporation rt toolbox2
- mitsubishi electric corporation rt toolbox3
- mitsubishi electric corporation setting/monitoring tools for the c controller module (sw4pvc-ccpu)
- mitsubishi electric corporation slmp data collector
- mitsubishi electric corporation m commdtm-hart
- mitsubishi electric corporation m commdtm-io-link
- mitsubishielectric cpu module logging configuration tool
- mitsubishielectric cw configurator
- mitsubishielectric data transfer
- mitsubishielectric ezsocket
- mitsubishielectric fr configurator
- mitsubishielectric fr configurator2
- mitsubishielectric fr configurator sw3
- mitsubishielectric gt designer3
- mitsubishielectric gt softgot1000
- mitsubishielectric gt softgot2000
- mitsubishielectric gx configurator-dp
- mitsubishielectric gx configurator-qp
- mitsubishielectric gx developer
- mitsubishielectric gx explorer
- mitsubishielectric gx iec developer
- mitsubishielectric gx logviewer
- mitsubishielectric gx remoteservice-i
- mitsubishielectric gx works2
- mitsubishielectric gx works3
- mitsubishielectric iq monozukuri andon
- mitsubishielectric iq monozukuri process remote monitoring
- mitsubishielectric melfa-works
- mitsubishielectric melsec wincpu setting utility
- mitsubishielectric melsoft em software development kit
- mitsubishielectric melsoft navigator
- mitsubishielectric mh11 settingtool version2
- mitsubishielectric mi configurator
- mitsubishielectric mt works2
- mitsubishielectric mx component
- mitsubishielectric network interface board cc-link
- mitsubishielectric network interface board cc ie control utility
- mitsubishielectric network interface board cc ie field utility
- mitsubishielectric network interface board mneth utility
- mitsubishielectric px developer
- mitsubishielectric rt toolbox2
- mitsubishielectric rt toolbox3
- mitsubishielectric slmp data collector
- mitsubishielectric c controller module setting and monitoring tool
- mitsubishielectric m commdtm-hart
- mitsubishielectric m commdtm-io-link
- mitsubishielectric setting\/monitoring tools for the c controller module
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-20588 is a high vulnerability (CVSS 7.5) in Mitsubishi Electric Corporation Cpu Module Logging Configuration Tool, published February 19, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.88%, the 94th percentile. No source names a fixed version.
References
mitsubishielectric.com/psirt/vulnerability/pdf/2020-021_en.pdf
jvn.jp/vu/JVNVU92330101
cisa.gov/news-events/ics-advisories/icsa-21-049-02
mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-021_en.pdf
jvn.jp/vu/JVNVU92330101/index.html
nvd.nist.gov/vuln/detail/CVE-2021-20588
us-cert.cisa.gov/ics/advisories/icsa-21-049-02
github.com/advisories/GHSA-29pr-6732-fx67