{"id":"CVE-2021-20610","state":"PUBLISHED","title":"Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric MELSEC iQ-R Series R00/01/02CPU, MELSEC iQ-R Series R04/08/16/32/120(EN)CPU, MELSEC iQ-R Se","description":"Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric MELSEC iQ-R Series R00/01/02CPU, MELSEC iQ-R Series R04/08/16/32/120(EN)CPU, MELSEC iQ-R Series R08/16/32/120SFCPU, MELSEC iQ-R Series R08/16/32/120PCPU, MELSEC iQ-R Series R08/16/32/120PSFCPU, MELSEC iQ-R Series R16/32/64MTCPU, MELSEC iQ-R Series R12CCPU-V, MELSEC Q Series Q03UDECPU, MELSEC Q Series Q04/06/10/13/20/26/50/100UDEHCPU, MELSEC Q Series Q03/04/06/13/26UDVCPU, MELSEC Q Series Q04/06/13/26UDPVCPU, MELSEC Q Series Q12DCCPU-V, MELSEC Q Series Q24DHCCPU-V(G), MELSEC Q Series Q24/26DHCCPU-LS, MELSEC Q Series MR-MQ100, MELSEC Q Series Q172/173DCPU-S1, MELSEC Q Series Q172/173DSCPU, MELSEC Q Series Q170MCPU, MELSEC Q Series Q170MSCPU(-S1), MELSEC L Series L02/06/26CPU(-P), MELSEC L Series L26CPU-(P)BT and MELIPC Series MI5122-VW allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending specially crafted packets. System reset is required for recovery.","publishedAt":"2021-12-01T15:41:25.000Z","updatedAt":"2024-08-03T17:45:44.828Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"Mitsubishi"},"assigner":"Mitsubishi","products":["Mitsubishi Electric Corporation MELSEC iQ-R Series R00CPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R01CPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R02CPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R04CPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R08CPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R16CPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R32CPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R120CPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R04ENCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R08ENCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R16ENCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R32ENCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R120ENCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R08SFCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R16SFCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R32SFCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R120SFCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R08PCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R16PCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R32PCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R120PCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R08PSFCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R16PSFCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R32PSFCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R120PSFCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R16MTCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R32MTCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R64MTCPU","Mitsubishi Electric Corporation MELSEC iQ-R Series R12CCPU-V","Mitsubishi Electric Corporation MELSEC Q Series Q03UDECPU","Mitsubishi Electric Corporation MELSEC Q Series Q04UDEHCPU","Mitsubishi Electric Corporation MELSEC Q Series Q06UDEHCPU","Mitsubishi Electric Corporation MELSEC Q Series Q10UDEHCPU","Mitsubishi Electric Corporation MELSEC Q Series Q13UDEHCPU","Mitsubishi Electric Corporation MELSEC Q Series Q20UDEHCPU","Mitsubishi Electric Corporation MELSEC Q Series Q26UDEHCPU","Mitsubishi Electric Corporation MELSEC Q Series Q50UDEHCPU","Mitsubishi Electric Corporation MELSEC Q Series Q100UDEHCPU","Mitsubishi Electric Corporation MELSEC Q Series Q03UDVCPU","Mitsubishi Electric Corporation MELSEC Q Series Q04UDVCPU","Mitsubishi Electric Corporation MELSEC Q Series Q06UDVCPU","Mitsubishi Electric Corporation MELSEC Q Series Q13UDVCPU","Mitsubishi Electric Corporation MELSEC Q Series Q26UDVCPU","Mitsubishi Electric Corporation MELSEC Q Series Q04UDPVCPU","Mitsubishi Electric Corporation MELSEC Q Series Q06UDPVCPU","Mitsubishi Electric Corporation MELSEC Q Series Q13UDPVCPU","Mitsubishi Electric Corporation MELSEC Q Series Q26UDPVCPU","Mitsubishi Electric Corporation MELSEC Q Series Q12DCCPU-V","Mitsubishi Electric Corporation MELSEC Q Series Q24DHCCPU-V","Mitsubishi Electric Corporation MELSEC Q Series Q24DHCCPU-VG","Mitsubishi Electric Corporation MELSEC Q Series Q24DHCCPU-LS","Mitsubishi Electric Corporation MELSEC Q Series Q26DHCCPU-LS","Mitsubishi Electric Corporation MELSEC Q Series MR-MQ100","Mitsubishi Electric Corporation MELSEC Q Series Q172DCPU-S1","Mitsubishi Electric Corporation MELSEC Q Series Q173DCPU-S1","Mitsubishi Electric Corporation MELSEC Q Series Q172DSCPU","Mitsubishi Electric Corporation MELSEC Q Series Q173DSCPU","Mitsubishi Electric Corporation MELSEC Q Series Q170MCPU","Mitsubishi Electric Corporation MELSEC Q Series Q170MSCPU","Mitsubishi Electric Corporation MELSEC Q Series Q170MSCPU-S1","Mitsubishi Electric Corporation MELSEC L Series L02CPU","Mitsubishi Electric Corporation MELSEC L Series L06CPU","Mitsubishi Electric Corporation MELSEC L Series L26CPU","Mitsubishi Electric Corporation MELSEC L Series L02CPU-P","Mitsubishi Electric Corporation MELSEC L Series L06CPU-P","Mitsubishi Electric Corporation MELSEC L Series L26CPU-P","Mitsubishi Electric Corporation MELSEC L Series L26CPU-BT","Mitsubishi Electric Corporation MELSEC L Series L26CPU-PBT","Mitsubishi Electric Corporation MELIPC Series MI5122-VW"],"affected":[{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R00CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"24\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R01CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"24\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R02CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"24\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R04CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R08CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R16CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R32CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R120CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R04ENCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R08ENCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R16ENCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R32ENCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R120ENCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R08SFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"26\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R16SFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"26\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R32SFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"26\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R120SFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"26\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R08PCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"29\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R16PCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"29\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R32PCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"29\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R120PCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"29\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R08PSFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"08\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R16PSFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"08\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R32PSFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"08\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R120PSFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"08\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R16MTCPU","defaultStatus":"unaffected","versions":[{"version":"Operating system software version \"23\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R32MTCPU","defaultStatus":"unaffected","versions":[{"version":"Operating system software version \"23\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R64MTCPU","defaultStatus":"unaffected","versions":[{"version":"Operating system software version \"23\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R12CCPU-V","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"16\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q03UDECPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q04UDEHCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q06UDEHCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q10UDEHCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q13UDEHCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q20UDEHCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q26UDEHCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q50UDEHCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q100UDEHCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q03UDVCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23071\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q04UDVCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23071\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q06UDVCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23071\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q13UDVCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23071\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q26UDVCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23071\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q04UDPVCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23071\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q06UDPVCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23071\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q13UDPVCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23071\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q26UDPVCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23071\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q12DCCPU-V","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"24031\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q24DHCCPU-V","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"24031\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q24DHCCPU-VG","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"24031\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q24DHCCPU-LS","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"24031\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q26DHCCPU-LS","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"24031\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series MR-MQ100","defaultStatus":"unaffected","versions":[{"version":"Operating system software version \"F\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q172DCPU-S1","defaultStatus":"unaffected","versions":[{"version":"Operating system software version \"W\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q173DCPU-S1","defaultStatus":"unaffected","versions":[{"version":"Operating system software version \"W\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q172DSCPU","defaultStatus":"unaffected","versions":[{"version":"Operating system software version \"Y\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q173DSCPU","defaultStatus":"unaffected","versions":[{"version":"Operating system software version \"Y\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q170MCPU","defaultStatus":"unaffected","versions":[{"version":"Operating system software version \"W\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q170MSCPU","defaultStatus":"unaffected","versions":[{"version":"Operating system software version \"Y\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q170MSCPU-S1","defaultStatus":"unaffected","versions":[{"version":"Operating system software version \"Y\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC L Series L02CPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC L Series L06CPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC L Series L26CPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC L Series L02CPU-P","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC L Series L06CPU-P","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC L Series L26CPU-P","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC L Series L26CPU-BT","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC L Series L26CPU-PBT","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELIPC Series MI5122-VW","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"05\" and prior","status":"affected"}]}],"references":["https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-019_en.pdf","https://jvn.jp/vu/JVNVU94434051/index.html","https://us-cert.cisa.gov/ics/advisories/icsa-21-334-02"],"weaknesses":["CWE-130"],"ingestedAt":"2026-10-29T19:47:55.610Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/20xxx/CVE-2021-20610.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-20610","state":"PUBLISHED","datePublished":"2021-12-01T15:41:25.000Z","dateUpdated":"2024-08-03T17:45:44.828Z","assignerShortName":"Mitsubishi","assignerOrgId":"e0f77b61-78fd-4786-b3fb-1ee347a748ad","dateReserved":"2020-12-17T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric MELSEC iQ-R Series R00/01/02CPU, MELSEC iQ-R Series R04/08/16/32/120(EN)CPU, MELSEC iQ-R Series R08/16/32/120SFCPU, MELSEC iQ-R Series R08/16/32/120PCPU, MELSEC iQ-R Series R08/16/32/120PSFCPU, MELSEC iQ-R Series R16/32/64MTCPU, MELSEC iQ-R Series R12CCPU-V, MELSEC Q Series Q03UDECPU, MELSEC Q Series Q04/06/10/13/20/26/50/100UDEHCPU, MELSEC Q Series Q03/04/06/13/26UDVCPU, MELSEC Q Series Q04/06/13/26UDPVCPU, MELSEC Q Series Q12DCCPU-V, MELSEC Q Series Q24DHCCPU-V(G), MELSEC Q Series Q24/26DHCCPU-LS, MELSEC Q Series MR-MQ100, MELSEC Q Series Q172/173DCPU-S1, MELSEC Q Series Q172/173DSCPU, MELSEC Q Series Q170MCPU, MELSEC Q Series Q170MSCPU(-S1), MELSEC L Series L02/06/26CPU(-P), MELSEC L Series L26CPU-(P)BT and MELIPC Series MI5122-VW allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending specially crafted packets. System reset is required for recovery."}],"affected":[{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R00CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"24\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R01CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"24\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R02CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"24\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R04CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R08CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R16CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R32CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R120CPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R04ENCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R08ENCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R16ENCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R32ENCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R120ENCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"57\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R08SFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"26\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R16SFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"26\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R32SFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"26\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R120SFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"26\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R08PCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"29\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R16PCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"29\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R32PCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"29\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R120PCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"29\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R08PSFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"08\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R16PSFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"08\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R32PSFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"08\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC iQ-R Series R120PSFCPU","defaultStatus":"unaffected","versions":[{"version":"Firmware versions \"08\" and 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Q03UDECPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q04UDEHCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q06UDEHCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q10UDEHCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and prior","status":"affected"}]},{"vendor":"Mitsubishi Electric Corporation","product":"MELSEC Q Series Q13UDEHCPU","defaultStatus":"unaffected","versions":[{"version":"The first 5 digits of serial No. \"23121\" and 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