Vulnerability Details CVE-2021-20586
Resource management errors vulnerability in a robot controller of MELFA FR Series(controller "CR800-*V*D" of RV-*FR***-D-* all versions, controller "CR800-*HD" of RH-*FRH***-D-* all versions, controller "CR800-*HRD" of RH-*FRHR***-D-* all versions, controller "CR800-*V*R with R16RTCPU" of RV-*FR***-R-* all versions, controller "CR800-*HR with R16RTCPU" of RH-*FRH***-R-* all versions, controller "CR800-*HRR with R16RTCPU" of RH-*FRHR***-R-* all versions, controller "CR800-*V*Q with Q172DSRCPU" of RV-*FR***-Q-* all versions, controller "CR800-*HQ with Q172DSRCPU" of RH-*FRH***-Q-* all versions, controller "CR800-*HRQ with Q172DSRCPU" of RH-*FRHR***-Q-* all versions) and a robot controller of MELFA CR Series(controller "CR800-CVD" of RV-8CRL-D-* all versions, controller "CR800-CHD" of RH-*CRH**-D-* all versions) as well as a cooperative robot ASSISTA(controller "CR800-05VD" of RV-5AS-D-* all versions) allows a remote unauthenticated attacker to cause a DoS of the execution of the robot program and the Ethernet communication by sending a large amount of packets in burst over a short period of time. As a result of DoS, an error may occur. A reset is required to recover it if the error occurs.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.02
EPSS Ranking 82.9%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 7.8
Products affected by CVE-2021-20586
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cpe:2.3:h:mitsubishielectric:rh12frh55:-
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cpe:2.3:h:mitsubishielectric:rh12frh85:-
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cpe:2.3:h:mitsubishielectric:rh12rfh70:-
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cpe:2.3:h:mitsubishielectric:rh1frhr:-
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cpe:2.3:h:mitsubishielectric:rh20frh100:-
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cpe:2.3:h:mitsubishielectric:rh20frh85:-
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cpe:2.3:h:mitsubishielectric:rh3frh35:-
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cpe:2.3:h:mitsubishielectric:rh3frh45:-
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cpe:2.3:h:mitsubishielectric:rh3frh55:-
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cpe:2.3:h:mitsubishielectric:rh3frhr:-
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cpe:2.3:h:mitsubishielectric:rh6frh35:-
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cpe:2.3:h:mitsubishielectric:rh6frh45:-
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cpe:2.3:h:mitsubishielectric:rh6frh55:-
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cpe:2.3:h:mitsubishielectric:rv13fr:-
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cpe:2.3:h:mitsubishielectric:rv13frl:-
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cpe:2.3:h:mitsubishielectric:rv13frlm/c:-
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cpe:2.3:h:mitsubishielectric:rv13frm/c:-
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cpe:2.3:h:mitsubishielectric:rv20fr:-
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cpe:2.3:h:mitsubishielectric:rv20frm/c:-
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cpe:2.3:h:mitsubishielectric:rv2fr(b):-
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cpe:2.3:h:mitsubishielectric:rv2fr:-
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cpe:2.3:h:mitsubishielectric:rv2frl(b):-
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cpe:2.3:h:mitsubishielectric:rv2frl:-
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cpe:2.3:h:mitsubishielectric:rv4fr:-
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cpe:2.3:h:mitsubishielectric:rv4frl:-
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cpe:2.3:h:mitsubishielectric:rv4frlm/c:-
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cpe:2.3:h:mitsubishielectric:rv4frm/c:-
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cpe:2.3:h:mitsubishielectric:rv7fr:-
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cpe:2.3:h:mitsubishielectric:rv7frl:-
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cpe:2.3:h:mitsubishielectric:rv7frll:-
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cpe:2.3:h:mitsubishielectric:rv7frllm/c:-
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cpe:2.3:h:mitsubishielectric:rv7frlm/c:-
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cpe:2.3:h:mitsubishielectric:rv7frm/c:-
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cpe:2.3:o:mitsubishielectric:rh12frh55_firmware:-
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cpe:2.3:o:mitsubishielectric:rh12frh85_firmware:-
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cpe:2.3:o:mitsubishielectric:rh12rfh70_firmware:-
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cpe:2.3:o:mitsubishielectric:rh1frhr_firmware:-
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cpe:2.3:o:mitsubishielectric:rh20frh100_firmware:-
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cpe:2.3:o:mitsubishielectric:rh20frh85_firmware:-
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cpe:2.3:o:mitsubishielectric:rh3frh35_firmware:-
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cpe:2.3:o:mitsubishielectric:rh3frh45_firmware:-
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cpe:2.3:o:mitsubishielectric:rh3frh55_firmware:-
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cpe:2.3:o:mitsubishielectric:rh3frhr_firmware:-
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cpe:2.3:o:mitsubishielectric:rh6frh35_firmware:-
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cpe:2.3:o:mitsubishielectric:rh6frh45_firmware:-
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cpe:2.3:o:mitsubishielectric:rh6frh55_firmware:-
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cpe:2.3:o:mitsubishielectric:rv13fr_firmware:-
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cpe:2.3:o:mitsubishielectric:rv13frl_firmware:-
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cpe:2.3:o:mitsubishielectric:rv13frlm/c_firmware:-
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cpe:2.3:o:mitsubishielectric:rv13frm/c_firmware:-
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cpe:2.3:o:mitsubishielectric:rv20fr_firmware:-
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cpe:2.3:o:mitsubishielectric:rv20frm/c_firmware:-
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cpe:2.3:o:mitsubishielectric:rv2fr(b)_firmware:-
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cpe:2.3:o:mitsubishielectric:rv2fr_firmware:-
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cpe:2.3:o:mitsubishielectric:rv2frl(b)_firmware:-
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cpe:2.3:o:mitsubishielectric:rv2frl_firmware:-
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cpe:2.3:o:mitsubishielectric:rv4fr_firmware:-
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cpe:2.3:o:mitsubishielectric:rv4frl_firmware:-
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cpe:2.3:o:mitsubishielectric:rv4frlm/c_firmware:-
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cpe:2.3:o:mitsubishielectric:rv4frm/c_firmware:-
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cpe:2.3:o:mitsubishielectric:rv7fr_firmware:-
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cpe:2.3:o:mitsubishielectric:rv7frl_firmware:-
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cpe:2.3:o:mitsubishielectric:rv7frll_firmware:-
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cpe:2.3:o:mitsubishielectric:rv7frllm/c_firmware:-
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cpe:2.3:o:mitsubishielectric:rv7frlm/c_firmware:-
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cpe:2.3:o:mitsubishielectric:rv7frm/c_firmware:-