CVEvulnerability

CVE-2021-20611

7.5 HIGH Published 2021-12-01 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-12-01
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
7.8 HIGH — AV:N/AC:L/Au:N/C:N/I:N/A:C
Weaknesses
CWE-20

Description

Improper Input Validation 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 configurations

• mitsubishi melsec iq-r r00 cpu firmware (<= 24) • mitsubishi melsec iq-r r01 cpu firmware (<= 24) • mitsubishi melsec iq-r r02 cpu firmware (<= 24) • mitsubishi melsec iq-r r04 cpu firmware (<= 57) • mitsubishi melsec iq-r r08 cpu firmware (<= 57) • mitsubishi melsec iq-r r120 cpu firmware (<= 57) • mitsubishi melsec iq-r r16 cpu firmware (<= 57) • mitsubishi melsec iq-r r32 cpu firmware (<= 57) • mitsubishi melsec iq-r r04 pcpu firmware (<= 29) • mitsubishi melsec iq-r r08 pcpu firmware (<= 29) • mitsubishi melsec iq-r r16 pcpu firmware (<= 29) • mitsubishi melsec iq-r r32 pcpu firmware (<= 29) • mitsubishi melsec iq-r r120 pcpu firmware (<= 29) • mitsubishi melsec iq-r r08 sfcpu firmware • mitsubishi melsec iq-r r16 sfcpu firmware • mitsubishi melsec iq-r r32 sfcpu firmware • mitsubishi melsec iq-r r120 sfcpu firmware • mitsubishi melsec iq-r r16 mtcpu firmware • mitsubishi melsec iq-r r32 mtcpu firmware • mitsubishi melsec iq-r r64 mtcpu firmware • mitsubishi melsec iq-r r12 ccpu-v firmware • mitsubishi melsec q03udecpu firmware • mitsubishi melsec q04udecpu firmware • mitsubishi melsec q06udecpu firmware • mitsubishi melsec q10udecpu firmware • mitsubishi melsec q13udecpu firmware • mitsubishi melsec q20udecpu firmware • mitsubishi melsec q26udecpu firmware • mitsubishi melsec q50udecpu firmware • mitsubishi melsec q100udecpu firmware • mitsubishi melsec q03udvcpu firmware • mitsubishi melsec q04udvcpu firmware • mitsubishi melsec q06udvcpu firmware • mitsubishi melsec q13udvcpu firmware • mitsubishi melsec q26udvcpu firmware • mitsubishi melsec q04udpvcpu firmware • mitsubishi melsec q06udpvcpu firmware • mitsubishi melsec q13udpvcpu firmware • mitsubishi melsec q26udpvcpu firmware • mitsubishi melsec q12dccpu-v firmware • mitsubishi melsec q24dhccpu-v\(g\) firmware • mitsubishi melsec q24dhccpu-ls firmware • mitsubishi melsec q26dhccpu-ls firmware • mitsubishi melsec mr-mq100 firmware • mitsubishi melsec q172dcpu-s1 firmware • mitsubishi melsec q173dcpu-s1 firmware • mitsubishi melsec q172dscpu firmware • mitsubishi melsec q173dscpu firmware • mitsubishi melsec q170mscpu\(-s1\) firmware • mitsubishi melsec q170mcpu firmware • mitsubishi melipc mi5122-vw firmware • mitsubishi melsec l26cpu-\(p\)bt firmware • mitsubishi melsec l26cpu\(-p\) firmware • mitsubishi melsec l06cpu\(-p\) firmware • mitsubishi melsec l02cpu\(-p\) firmware • mitsubishi melsec iq-r r08 cpu firmware • mitsubishi melsec iq-r r16 cpu firmware • mitsubishi melsec iq-r r32 cpu firmware • mitsubishi melsec iq-r r120 cpu firmware

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References