CVE-2021-20611

CVSS V2 High 7.8 CVSS V3 High 7.5
Description
Improper Input Validation vulnerability in Mitsubishi Electric MELSEC iQ-R Series R00/01/02CPU Firmware versions "24" and prior, Mitsubishi Electric MELSEC iQ-R Series R04/08/16/32/120(EN)CPU Firmware versions "57" and prior, Mitsubishi Electric MELSEC iQ-R Series R08/16/32/120SFCPU Firmware versions "28" and prior, Mitsubishi Electric MELSEC iQ-R Series R08/16/32/120PCPU Firmware versions "29" and prior, Mitsubishi Electric MELSEC iQ-R Series R08/16/32/120PSFCPU Firmware versions "08" and prior, Mitsubishi Electric MELSEC iQ-R Series R16/32/64MTCPU Operating system software version "23" and prior, Mitsubishi Electric MELSEC iQ-R Series R12CCPU-V Firmware versions "16" and prior, Mitsubishi Electric MELSEC Q Series Q03UDECPU The first 5 digits of serial No. "23121" and prior, Mitsubishi Electric MELSEC Q Series Q04/06/10/13/20/26/50/100UDEHCPU The first 5 digits of serial No. "23121" and prior, Mitsubishi Electric MELSEC Q Series Q03/04/06/13/26UDVCPU The first 5 digits of serial No. "23071" and prior, Mitsubishi Electric MELSEC Q Series Q04/06/13/26UDPVCPU The first 5 digits of serial No. "23071" and prior, Mitsubishi Electric MELSEC Q Series Q12DCCPU-V The first 5 digits of serial No. "24031" and prior, Mitsubishi Electric MELSEC Q Series Q24DHCCPU-V(G) The first 5 digits of serial No. "24031" and prior, Mitsubishi Electric MELSEC Q Series Q24/26DHCCPU-LS The first 5 digits of serial No. "24031" and prior, Mitsubishi Electric MELSEC Q Series MR-MQ100 Operating system software version "F" and prior, Mitsubishi Electric MELSEC Q Series Q172/173DCPU-S1 Operating system software version "W" and prior, Mitsubishi Electric MELSEC Q Series Q172/173DSCPU All versions, Mitsubishi Electric MELSEC Q Series Q170MCPU Operating system software version "W" and prior, Mitsubishi Electric MELSEC Q Series Q170MSCPU(-S1) All versions, Mitsubishi Electric MELSEC L Series L02/06/26CPU(-P) The first 5 digits of serial No. "23121" and prior, Mitsubishi Electric MELSEC L Series L26CPU-(P)BT The first 5 digits of serial No. "23121" and prior and Mitsubishi Electric MELIPC Series MI5122-VW Firmware versions "05" and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending specially crafted packets. System reset is required for recovery.
Overview
  • CVE ID
  • CVE-2021-20611
  • Assigner
  • Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp
  • Vulnerability Status
  • Modified
  • Published Version
  • 2021-12-01T16:15:07
  • Last Modified Date
  • 2022-11-25T03:15:10
Weakness Enumerations
CWE URL
CWE-20 http://cwe.mitre.org/data/definitions/20.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r00_cpu_firmware:*:*:*:*:*:*:*:* 1 OR 24
cpe:2.3:h:mitsubishi:melsec_iq-r_r00_cpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r01_cpu_firmware:*:*:*:*:*:*:*:* 1 OR 24
cpe:2.3:h:mitsubishi:melsec_iq-r_r01_cpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r02_cpu_firmware:*:*:*:*:*:*:*:* 1 OR 24
cpe:2.3:h:mitsubishi:melsec_iq-r_r02_cpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r04_cpu_firmware:*:*:*:*:*:*:*:* 1 OR 57
cpe:2.3:h:mitsubishi:melsec_iq-r_r04_cpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r08_cpu_firmware:*:*:*:*:*:*:*:* 1 OR 57
cpe:2.3:h:mitsubishi:melsec_iq-r_r08_cpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r120_cpu_firmware:*:*:*:*:*:*:*:* 1 OR 57
cpe:2.3:h:mitsubishi:melsec_iq-r_r120_cpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r16_cpu_firmware:*:*:*:*:*:*:*:* 1 OR 57
cpe:2.3:h:mitsubishi:melsec_iq-r_r16_cpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r32_cpu_firmware:*:*:*:*:*:*:*:* 1 OR 57
cpe:2.3:h:mitsubishi:melsec_iq-r_r32_cpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r04_pcpu_firmware:*:*:*:*:*:*:*:* 1 OR 29
cpe:2.3:h:mitsubishi:melsec_iq-r_r04_pcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r08_pcpu_firmware:*:*:*:*:*:*:*:* 1 OR 29
cpe:2.3:h:mitsubishi:melsec_iq-r_r08_pcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r16_pcpu_firmware:*:*:*:*:*:*:*:* 1 OR 29
cpe:2.3:h:mitsubishi:melsec_iq-r_r16_pcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r32_pcpu_firmware:*:*:*:*:*:*:*:* 1 OR 29
cpe:2.3:h:mitsubishi:melsec_iq-r_r32_pcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r120_pcpu_firmware:*:*:*:*:*:*:*:* 1 OR 29
cpe:2.3:h:mitsubishi:melsec_iq-r_r120_pcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r08_sfcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_iq-r_r08_sfcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r16_sfcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_iq-r_r16_sfcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r32_sfcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_iq-r_r32_sfcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r120_sfcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_iq-r_r120_sfcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r16_mtcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_iq-r_r16_mtcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r32_mtcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_iq-r_r32_mtcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r64_mtcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_iq-r_r64_mtcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r12_ccpu-v_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_iq-r_r12_ccpu-v:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q03udecpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q03udecpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q04udecpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q04udecpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q06udecpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q06udecpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q10udecpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q10udecpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q13udecpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q13udecpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q20udecpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q20udecpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q26udecpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q26udecpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q50udecpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q50udecpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q100udecpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q100udecpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q03udvcpu_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q03udvcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q04udvcpu_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q04udvcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q06udvcpu_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q06udvcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q13udvcpu_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q13udvcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q26udvcpu_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q26udvcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q04udpvcpu_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q04udpvcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q06udpvcpu_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q06udpvcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q13udpvcpu_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q13udpvcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q26udpvcpu_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q26udpvcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q12dccpu-v_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q12dccpu-v:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q24dhccpu-v\(g\)_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q24dhccpu-v\(g\):-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q24dhccpu-ls_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q24dhccpu-ls:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q26dhccpu-ls_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q26dhccpu-ls:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_mr-mq100_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_mr-mq100:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q172dcpu-s1_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q172dcpu-s1:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q173dcpu-s1_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q173dcpu-s1:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q172dscpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q172dscpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q173dscpu_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q173dscpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q170mscpu\(-s1\)_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q170mscpu\(-s1\):-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_q170mcpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_q170mcpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melipc_mi5122-vw_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melipc_mi5122-vw:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_l26cpu-\(p\)bt_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_l26cpu-\(p\)bt:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_l26cpu\(-p\)_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_l26cpu\(-p\):-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_l06cpu\(-p\)_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_l06cpu\(-p\):-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_l02cpu\(-p\)_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_l02cpu\(-p\):-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r08_cpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_iq-r_r08_cpu:*:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r16_cpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_iq-r_r16_cpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r32_cpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_iq-r_r32_cpu:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:mitsubishi:melsec_iq-r_r120_cpu_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishi:melsec_iq-r_r120_cpu:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.8
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-019_en.pdf Vendor Advisory
https://jvn.jp/vu/JVNVU94434051/index.html Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-334-02 Third Party Advisory US Government Resource
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-20611
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20611
History
Created Old Value New Value Data Type Notes
2022-05-10 06:26:15 Added to TrackCVE
2022-12-05 15:22:41 2021-12-01T16:15Z 2021-12-01T16:15:07 CVE Published Date updated
2022-12-05 15:22:41 2022-11-25T03:15:10 CVE Modified Date updated
2022-12-05 15:22:41 Modified Vulnerability Status updated