CVE-2021-20610
Estado: ModificadaAlta (7.5)—
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.
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System reset is required for recovery.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 3.27%
- Percentil entre todas las CVEs puntuadas: 88
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (55)
Mitsubishi — Melipc Mi5122-vw FirmwareMitsubishi — Melsec Iq-r R00 CPU FirmwareMitsubishi — Melsec Iq-r R01 CPU FirmwareMitsubishi — Melsec Iq-r R02 CPU FirmwareMitsubishi — Melsec Iq-r R04 CPU FirmwareMitsubishi — Melsec Iq-r R04 Pcpu FirmwareMitsubishi — Melsec Iq-r R08 CPU FirmwareMitsubishi — Melsec Iq-r R08 Pcpu FirmwareMitsubishi — Melsec Iq-r R08 Sfcpu FirmwareMitsubishi — Melsec Iq-r R120 CPU FirmwareMitsubishi — Melsec Iq-r R120 Pcpu FirmwareMitsubishi — Melsec Iq-r R120 Sfcpu FirmwareMitsubishi — Melsec Iq-r R12 Ccpu-v FirmwareMitsubishi — Melsec Iq-r R16 CPU FirmwareMitsubishi — Melsec Iq-r R16 Mtcpu FirmwareMitsubishi — Melsec Iq-r R16 Pcpu FirmwareMitsubishi — Melsec Iq-r R16 Sfcpu FirmwareMitsubishi — Melsec Iq-r R32 CPU FirmwareMitsubishi — Melsec Iq-r R32 Mtcpu FirmwareMitsubishi — Melsec Iq-r R32 Pcpu FirmwareMitsubishi — Melsec Iq-r R32 Sfcpu FirmwareMitsubishi — Melsec Iq-r R64 Mtcpu FirmwareMitsubishi — Melsec L02cpu(-p) FirmwareMitsubishi — Melsec L06cpu(-p) FirmwareMitsubishi — Melsec L26cpu(-p) FirmwareMitsubishi — Melsec L26cpu-(p)bt FirmwareMitsubishi — Melsec Mr-mq100 FirmwareMitsubishi — Melsec Q03udecpu FirmwareMitsubishi — Melsec Q03udvcpu FirmwareMitsubishi — Melsec Q04udecpu FirmwareMitsubishi — Melsec Q04udpvcpu FirmwareMitsubishi — Melsec Q04udvcpu FirmwareMitsubishi — Melsec Q06udecpu FirmwareMitsubishi — Melsec Q06udpvcpu FirmwareMitsubishi — Melsec Q06udvcpu FirmwareMitsubishi — Melsec Q100udecpu FirmwareMitsubishi — Melsec Q10udecpu FirmwareMitsubishi — Melsec Q12dccpu-v FirmwareMitsubishi — Melsec Q13udecpu FirmwareMitsubishi — Melsec Q13udpvcpu FirmwareMitsubishi — Melsec Q13udvcpu FirmwareMitsubishi — Melsec Q170mcpu FirmwareMitsubishi — Melsec Q170mscpu(-s1) FirmwareMitsubishi — Melsec Q172dcpu-s1 FirmwareMitsubishi — Melsec Q172dscpu FirmwareMitsubishi — Melsec Q173dcpu-s1 FirmwareMitsubishi — Melsec Q173dscpu FirmwareMitsubishi — Melsec Q20udecpu FirmwareMitsubishi — Melsec Q24dhccpu-ls FirmwareMitsubishi — Melsec Q24dhccpu-v(g) FirmwareMitsubishi — Melsec Q26dhccpu-ls FirmwareMitsubishi — Melsec Q26udecpu FirmwareMitsubishi — Melsec Q26udpvcpu FirmwareMitsubishi — Melsec Q26udvcpu FirmwareMitsubishi — Melsec Q50udecpu Firmware
CWE
- CWE-130
- NVD-CWE-Other
Referencias
- https://jvn.jp/vu/JVNVU94434051/index.html
- https://us-cert.cisa.gov/ics/advisories/icsa-21-334-02
- 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
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-019_en.pdf
JSON original (NVD)
Mostrar
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"source": "nvd@nist.gov",
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"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "LOW",
"availabilityImpact": "COMPLETE",
"confidentialityImpact": "NONE"
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"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
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{
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],
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{
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"vendor": "Mitsubishi Electric Corporation",
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{
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"vendor": "Mitsubishi Electric Corporation",
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"vendor": "Mitsubishi Electric Corporation",
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{
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"vendor": "Mitsubishi Electric Corporation",
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{
"status": "affected",
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{
"vendor": "Mitsubishi Electric Corporation",
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{
"status": "affected",
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"status": "affected",
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"vendor": "Mitsubishi Electric Corporation",
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{
"status": "affected",
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"vendor": "Mitsubishi Electric Corporation",
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{
"status": "affected",
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}
],
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{
"vendor": "Mitsubishi Electric Corporation",
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{
"status": "affected",
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}
],
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"vendor": "Mitsubishi Electric Corporation",
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{
"status": "affected",
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],
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{
"status": "affected",
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}
],
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{
"vendor": "Mitsubishi Electric Corporation",
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{
"status": "affected",
"version": "Operating system software version \"Y\" and prior"
}
],
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{
"vendor": "Mitsubishi Electric Corporation",
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"versions": [
{
"status": "affected",
"version": "Operating system software version \"Y\" and prior"
}
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"vendor": "Mitsubishi Electric Corporation",
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"vendor": "Mitsubishi Electric Corporation",
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{
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{
"vendor": "Mitsubishi Electric Corporation",
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{
"status": "affected",
"version": "Operating system software version \"Y\" and prior"
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],
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{
"vendor": "Mitsubishi Electric Corporation",
"product": "MELSEC L Series L02CPU",
"versions": [
{
"status": "affected",
"version": "The first 5 digits of serial No. \"23121\" and prior"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Mitsubishi Electric Corporation",
"product": "MELSEC L Series L06CPU",
"versions": [
{
"status": "affected",
"version": "The first 5 digits of serial No. \"23121\" and prior"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Mitsubishi Electric Corporation",
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{
"status": "affected",
"version": "The first 5 digits of serial No. \"23121\" and prior"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Mitsubishi Electric Corporation",
"product": "MELSEC L Series L02CPU-P",
"versions": [
{
"status": "affected",
"version": "The first 5 digits of serial No. \"23121\" and prior"
}
],
"defaultStatus": "unaffected"
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"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."
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