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TI-2020-04619 Aliases CVE-2020-5652GHSA-cpv9-4hm5-jjhj

Uncontrolled resource consumption in Mitsubishi Electric Corporation MELSEC iQ-R, Q and L…

Priority LOW 39CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.

Summary

Uncontrolled resource consumption vulnerability in Ethernet Port on MELSEC iQ-R, Q and L series CPU modules (R 00/01/02 CPU firmware versions '20' and earlier, R 04/08/16/32/120 (EN) CPU firmware versions '52' and earlier, R 08/16/32/120 SFCPU firmware versions '22' and earlier, R 08/16/32/120 PCPU all versions, R 08/16/32/120 PSFCPU all versions, R 16/32/64 MTCPU all versions, Q03 UDECPU, Q 04/06/10/13/20/26/50/100 UDEHCPU serial number '22081' and earlier , Q 03/04/06/13/26 UDVCPU serial number '22031' and earlier, Q 04/06/13/26 UDPVCPU serial number '22031' and earlier, Q 172/173 DCPU all versions, Q 172/173 DSCPU all versions, Q 170 MCPU all versions, Q 170 MSCPU all versions, L 02/06/26 CPU (-P) and L 26 CPU - (P) BT all versions) allows a remote unauthenticated attacker to stop the Ethernet communication functions of the products via a specially crafted packet, which may lead to a denial of service (DoS) condition .

Why it matters now

EPSS 0.03572 89th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Mitsubishi Electric CorporationMELSEC iQ-R, Q and L seriesR 00/01/02 CPU firmware versions '20' and earlier, R 04/08/16/32/120 (EN) CPU firmware versions '52' and earlier, R 08/16/32/120 SFCPU firmware versions '22' and earlier, R 08/16/32/120 PCPU all versions, R 08/16/32/120 PSFCPU all versions, R 16/32/64 MTCPU all versions, Q03 UDECPU, Q 04/06/10/13/20/26/50/100 UDEHCPU serial number '22081' and earlier, Q 03/04/06/13/26 UDVCPU serial number '22031' and earlier, Q 04/06/13/26 UDPVCPU serial number '22031' and earlier, Q 172/173 DCPU all versions, Q 172/173 DSCPU all versions, Q 170 MCPU all versions, Q 170 MSCPU all versions, and L 02/06/26 CPU (-P) and L 26 CPU - (P) BT all versions—No fix listedCNA
  • MELSEC iQ-R, Q and L series VendorMitsubishi Electric Corporation Affected R 00/01/02 CPU firmware versions '20' and earlier, R 04/08/16/32/120 (EN) CPU firmware versions '52' and earlier, R 08/16/32/120 SFCPU firmware versions '22' and earlier, R 08/16/32/120 PCPU all versions, R 08/16/32/120 PSFCPU all versions, R 16/32/64 MTCPU all versions, Q03 UDECPU, Q 04/06/10/13/20/26/50/100 UDEHCPU serial number '22081' and earlier, Q 03/04/06/13/26 UDVCPU serial number '22031' and earlier, Q 04/06/13/26 UDPVCPU serial number '22031' and earlier, Q 172/173 DCPU all versions, Q 172/173 DSCPU all versions, Q 170 MCPU all versions, Q 170 MSCPU all versions, and L 02/06/26 CPU (-P) and L 26 CPU - (P) BT all versions Fixed in — No fix listed CNA

CPE configurations NVD · 102

CPEVersionsRoleVendor
cpe:2.3:o:mitsubishielectric:melsec_q-q04udpvcpu_firmware:22031:*:*:*:*:*:*:*22031VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q04udpvcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q06udpvcpu_firmware:22031:*:*:*:*:*:*:*22031VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q06udpvcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q13udpvcpu_firmware:22031:*:*:*:*:*:*:*22031VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q13udpvcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q26udpvcpu_firmware:22031:*:*:*:*:*:*:*22031VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q26udpvcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q03udvcpu_firmware:22031:*:*:*:*:*:*:*22031VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q03udvcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
Show 92 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:mitsubishielectric:melsec_q-q04udvcpu_firmware:22031:*:*:*:*:*:*:*22031VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q04udvcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q13udvcpu_firmware:22031:*:*:*:*:*:*:*22031VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q13udvcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q26udvcpu_firmware:22031:*:*:*:*:*:*:*22031VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q26udvcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q03udecpu_firmware:22081:*:*:*:*:*:*:*22081VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q03udecpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q04udehcpu_firmware:22081:*:*:*:*:*:*:*22081VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q04udehcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q06udehcpu_firmware:22081:*:*:*:*:*:*:*22081VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q06udehcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q10udehcpu_firmware:22081:*:*:*:*:*:*:*22081VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q10udehcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q13udehcpu_firmware:22081:*:*:*:*:*:*:*22081VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q13udehcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q20udehcpu_firmware:22081:*:*:*:*:*:*:*22081VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q20udehcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q26udehcpu_firmware:22081:*:*:*:*:*:*:*22081VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q26udehcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q50udehcpu_firmware:22081:*:*:*:*:*:*:*22081VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q50udehcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q100udehcpu_firmware:22081:*:*:*:*:*:*:*22081VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q100udehcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r08sfcpu_firmware:22:*:*:*:*:*:*:*22VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r08sfcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r16sfcpu_firmware:22:*:*:*:*:*:*:*22VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r16sfcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r32sfcpu_firmware:22:*:*:*:*:*:*:*22VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r32sfcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r120sfcpu_firmware:22:*:*:*:*:*:*:*22VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r120sfcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r04encpu_firmware:52:*:*:*:*:*:*:*52VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r04encpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r08encpu_firmware:52:*:*:*:*:*:*:*52VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r08encpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r16encpu_firmware:52:*:*:*:*:*:*:*52VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r16encpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r32encpu_firmware:52:*:*:*:*:*:*:*52VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r32encpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r120encpu_firmware:52:*:*:*:*:*:*:*52VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r120encpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r00cpu_firmware:20:*:*:*:*:*:*:*20VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r00cpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r01cpu_firmware:20:*:*:*:*:*:*:*20VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r01cpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r02cpu_firmware:20:*:*:*:*:*:*:*20VulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r02cpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r08pcpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r08pcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r08psfcpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r08psfcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r120pcpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r120pcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r120psfcpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r120psfcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r16mtcpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r16mtcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r16pcpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r16pcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r16psfcpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r16psfcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r32mtcpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r32mtcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r32pcpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r32pcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r32psfcpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r32psfcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_iq-r64mtcpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_iq-r64mtcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_l02cpu-p_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_l02cpu-p:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_l06cpu-p_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_l06cpu-p:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_l26cpu-p_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_l26cpu-p:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_l26cpu-pbt_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_l26cpu-pbt:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q170mcpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q170mcpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q170mscpu-s1_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q170mscpu-s1:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q172dcpu-s1_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q172dcpu-s1:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q172dscpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q172dscpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q173dcpu-s1_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q173dcpu-s1:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-q173dscpu_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-q173dscpu:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.
cpe:2.3:o:mitsubishielectric:melsec_q-qmr-mq100_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableMitsubishi Electric Europe B.V.
cpe:2.3:h:mitsubishielectric:melsec_q-qmr-mq100:-:*:*:*:*:*:*:*not specified by NVDRunning onMitsubishi Electric Europe B.V.

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-5652
  2. 2026-10-03 Alias added: GHSA-cpv9-4hm5-jjhj

References

  • TI-2022-14737 Deserialization of untrusted data in Mitsubishi Electric Corporation GENESIS64 CVSS 3.1CRITICAL 9.8
  • TI-2022-19113 Authentication Bypass Vulnerability in Web Server Function on MELSEC Series CVSS 3.1CRITICAL 9.1
  • TI-2023-01345 Denial-of-Service and Remote Code Execution Vulnerability in MELSEC Series CPU module CVSS 3.1CRITICAL 10.0
  • TI-2023-06346 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')… CVSS 3.1CRITICAL 9.8
  • TI-2023-03131 Denial of Service (DoS) and Remote Code Execution Vulnerability in MITSUBISHI CNC Series CVSS 3.1CRITICAL 9.8
  • TI-2021-03821 Memory corruption in Mitsubishi Electric Corporation CPU Module Logging Configuration Tool CVSS 3.1CRITICAL 9.8
See all 151 →

Sources