# Mitsubishi Electric Corporation CPU Module Logging…: Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric… CVE record · `CVE-2021-20588` - **Identifiers:** `CVE-2021-20588` - **State:** Confirmed - **Severity:** CVSS 7.5 High - **Critical:** No - **CNA:** Mitsubishi - **Weakness (CWE):** [CWE-130](https://cwe.mitre.org/data/definitions/130.html) - **Tags:** [CWE-130](https://agentprime.io/advisories/tag/cwe-130.md) - **Technologies:** [Mitsubishi Electric Corporation CPU Module Logging Configuration Tool](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-cpu-module-logging-configuration-tool.md) · [Mitsubishi Electric Corporation CW Configurator](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-cw-configurator.md) · [Mitsubishi Electric Corporation Data Transfer](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-data-transfer.md) · [Mitsubishi Electric Corporation EZSocket](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-ezsocket.md) · [Mitsubishi Electric Corporation FR Configurator](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-fr-configurator.md) · [Mitsubishi Electric Corporation FR Configurator SW3](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-fr-configurator-sw3.md) · [Mitsubishi Electric Corporation FR Configurator2](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-fr-configurator2.md) · [Mitsubishi Electric Corporation GT Designer3 Version1(GOT1000)](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-gt-designer3-version1-got1000.md) · [Mitsubishi Electric Corporation GT Designer3 Version1(GOT2000)](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-gt-designer3-version1-got2000.md) · [Mitsubishi Electric Corporation GT SoftGOT1000 Version3](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-gt-softgot1000-version3.md) · [Mitsubishi Electric Corporation GT SoftGOT2000 Version1](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-gt-softgot2000-version1.md) · [Mitsubishi Electric Corporation GX Configurator-DP](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-gx-configurator-dp.md) · [Mitsubishi Electric Corporation GX Configurator-QP](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-gx-configurator-qp.md) · [Mitsubishi Electric Corporation GX Developer](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-gx-developer.md) · [Mitsubishi Electric Corporation GX Explorer](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-gx-explorer.md) · [Mitsubishi Electric Corporation GX IEC Developer](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-gx-iec-developer.md) · [Mitsubishi Electric Corporation GX LogViewer](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-gx-logviewer.md) · [Mitsubishi Electric Corporation GX RemoteService-I](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-gx-remoteservice-i.md) · [Mitsubishi Electric Corporation GX Works2](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-gx-works2.md) · [Mitsubishi Electric Corporation GX Works3](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-gx-works3.md) - **Published:** 19 Feb 2021 - **Updated:** 12 Jun 2025 - **Reviewed by a person:** No Published by the CVE Program (CNA: Mitsubishi) at 19 Feb 2021, 19:58 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. ## Affected products, as the CNA wrote them - Vendor: Mitsubishi Electric Corporation. Product: CPU Module Logging Configuration Tool. - affected: `1.112R and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: CW Configurator. - affected: `1.011M and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: Data Transfer. - affected: `3.44W and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: EZSocket. - affected: `5.4 and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: FR Configurator. - affected: `all versions` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: FR Configurator SW3. - affected: `all versions` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: FR Configurator2. - affected: `1.24A and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: GT Designer3 Version1(GOT1000). - affected: `1.250L and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: GT Designer3 Version1(GOT2000). - affected: `1.250L and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: GT SoftGOT1000 Version3. - affected: `3.245F and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: GT SoftGOT2000 Version1. - affected: `1.250L and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: GX Configurator-DP. - affected: `7.14Q and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: GX Configurator-QP. - affected: `all versions` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: GX Developer. - affected: `8.506C and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: GX Explorer. - affected: `all versions` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: GX IEC Developer. - affected: `all versions` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: GX LogViewer. - affected: `1.115U and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: GX RemoteService-I. - affected: `all versions` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: GX Works2. - affected: `1.597X and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: GX Works3. - affected: `1.070Y and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: iQ Monozukuri ANDON (Data Transfer). - affected: `1.003D and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: iQ Monozukuri Process Remote Monitoring (Data Transfer). - affected: `1.002C and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: M_CommDTM-HART. - affected: `all versions` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: M_CommDTM-IO-Link. - affected: `1.03D and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: MELFA-Works. - affected: `4.4 and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: MELSEC WinCPU Setting Utility. - affected: `all versions` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: MELSOFT EM Software Development Kit (EM Configurator). - affected: `1.015R and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: MELSOFT Navigator. - affected: `2.74C and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: MH11 SettingTool Version2. - affected: `2.004E and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: MI Configurator. - affected: `1.004E and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: MT Works2. - affected: `1.167Z and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: MX Component. - affected: `5.001B and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: Network Interface Board CC IE Control utility. - affected: `1.29F and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: Network Interface Board CC IE Field Utility. - affected: `1.16S and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: Network Interface Board CC-Link Ver.2 Utility. - affected: `1.23Z and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: Network Interface Board MNETH utility. - affected: `34L and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: PX Developer. - affected: `1.53F and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: RT ToolBox2. - affected: `3.73B and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: RT ToolBox3. - affected: `1.82L and prior` - Other versions: unaffected - Vendor: Mitsubishi Electric Corporation. Product: Setting/monitoring tools for the C Controller module (SW4PVC-CCPU). - affected: `4.12N and prior` - Other versions: unaffected And 1 more products. The full list is on the CVE record: ## Not analysed yet We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter. ## Severity and exploitation - 7.5 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`, from CNA (Mitsubishi) - **CISA KEV:** Not listed. - **EPSS:** 0.069, the 94th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days. ## Timeline This record came from the full history of the CVE Program, published 19 Feb 2021. New records show when each source confirmed them. ## Sources - [CVE List: CVE-2021-20588](https://www.cve.org/CVERecord?id=CVE-2021-20588) - [NVD: CVE-2021-20588](https://nvd.nist.gov/vuln/detail/CVE-2021-20588) ### References from the CNA - (vendor-advisory) - (government-resource) - (government-resource) Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description. ## Check whether this affects you This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run. - With the agentprime MCP server (), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: - As JSON: - Everything that needs attention now: --- The web page: . Everything for agents: .