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CVE-2020-5652

HIGHCVSS 7.5/10EPSS 3.53%

Last modified

CVE-2020-5652 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Uncontrolled resource consumption vulnerability in Ethernet Port on MELSEC iQ-R, Q and L series CPU modules (R 00/01/02 CPU firmware versions '20' and earlier, R 04/08/16/32/120 (EN) CPU firmware versions '52' and earlier, R 08/16/32/120 SFCPU firmware versions '22' and earlier, R 08/16/32/120 PCPU all versions, R 08/16/32/120 PSFCPU all versions, R 16/32/64 MTCPU all versions, Q03 UDECPU, Q 04/06/10/13/20/26/50/100 UDEHCPU serial number '22081' and earlier , Q 03/04/06/13/26 UDVCPU serial number '22031' and earlier, Q 04/06/13/26 UDPVCPU serial number '22031' and earlier, Q 172/173 DCPU all versions, Q 172/173 DSCPU all versions, Q 170 MCPU all versions, Q 170 MSCPU all versions, L 02/06/26 CPU (-P) and L 26 CPU - (P) BT all versions) allows a remote unauthenticated attacker to stop the Ethernet communication functions of the products via a specially crafted packet, which may lead to a denial of service (DoS) condition .. EPSS estimates a 3.53% chance of exploitation in the next 30 days.

Description

Uncontrolled resource consumption vulnerability in Ethernet Port on MELSEC iQ-R, Q and L series CPU modules (R 00/01/02 CPU firmware versions '20' and earlier, R 04/08/16/32/120 (EN) CPU firmware versions '52' and earlier, R 08/16/32/120 SFCPU firmware versions '22' and earlier, R 08/16/32/120 PCPU all versions, R 08/16/32/120 PSFCPU all versions, R 16/32/64 MTCPU all versions, Q03 UDECPU, Q 04/06/10/13/20/26/50/100 UDEHCPU serial number '22081' and earlier , Q 03/04/06/13/26 UDVCPU serial number '22031' and earlier, Q 04/06/13/26 UDPVCPU serial number '22031' and earlier, Q 172/173 DCPU all versions, Q 172/173 DSCPU all versions, Q 170 MCPU all versions, Q 170 MSCPU all versions, L 02/06/26 CPU (-P) and L 26 CPU - (P) BT all versions) allows a remote unauthenticated attacker to stop the Ethernet communication functions of the products via a specially crafted packet, which may lead to a denial of service (DoS) condition .

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
3.53%

87.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MitsubishielectricMelsec Q-Q04udpvcpu Firmware22031
MitsubishielectricMelsec Q-Q06udpvcpu Firmware22031
MitsubishielectricMelsec Q-Q13udpvcpu Firmware22031
MitsubishielectricMelsec Q-Q26udpvcpu Firmware22031
MitsubishielectricMelsec Q-Q03udvcpu Firmware22031
MitsubishielectricMelsec Q-Q04udvcpu Firmware22031
MitsubishielectricMelsec Q-Q13udvcpu Firmware22031
MitsubishielectricMelsec Q-Q26udvcpu Firmware22031
MitsubishielectricMelsec Q-Q03udecpu Firmware22081
MitsubishielectricMelsec Q-Q04udehcpu Firmware22081
MitsubishielectricMelsec Q-Q06udehcpu Firmware22081
MitsubishielectricMelsec Q-Q10udehcpu Firmware22081
MitsubishielectricMelsec Q-Q13udehcpu Firmware22081
MitsubishielectricMelsec Q-Q20udehcpu Firmware22081
MitsubishielectricMelsec Q-Q26udehcpu Firmware22081
MitsubishielectricMelsec Q-Q50udehcpu Firmware22081
MitsubishielectricMelsec Q-Q100udehcpu Firmware22081
MitsubishielectricMelsec Iq-R08sfcpu Firmware22
MitsubishielectricMelsec Iq-R16sfcpu Firmware22
MitsubishielectricMelsec Iq-R32sfcpu Firmware22
MitsubishielectricMelsec Iq-R120sfcpu Firmware22
MitsubishielectricMelsec Iq-R04encpu Firmware52
MitsubishielectricMelsec Iq-R08encpu Firmware52
MitsubishielectricMelsec Iq-R16encpu Firmware52
MitsubishielectricMelsec Iq-R32encpu Firmware52
MitsubishielectricMelsec Iq-R120encpu Firmware52
MitsubishielectricMelsec Iq-R00cpu Firmware20
MitsubishielectricMelsec Iq-R01cpu Firmware20
MitsubishielectricMelsec Iq-R02cpu Firmware20
MitsubishielectricMelsec Iq-R08pcpu FirmwareAll versions
MitsubishielectricMelsec Iq-R08psfcpu FirmwareAll versions
MitsubishielectricMelsec Iq-R120pcpu FirmwareAll versions
MitsubishielectricMelsec Iq-R120psfcpu FirmwareAll versions
MitsubishielectricMelsec Iq-R16mtcpu FirmwareAll versions
MitsubishielectricMelsec Iq-R16pcpu FirmwareAll versions
MitsubishielectricMelsec Iq-R16psfcpu FirmwareAll versions
MitsubishielectricMelsec Iq-R32mtcpu FirmwareAll versions
MitsubishielectricMelsec Iq-R32pcpu FirmwareAll versions
MitsubishielectricMelsec Iq-R32psfcpu FirmwareAll versions
MitsubishielectricMelsec Iq-R64mtcpu FirmwareAll versions
MitsubishielectricMelsec L02cpu-P FirmwareAll versions
MitsubishielectricMelsec L06cpu-P FirmwareAll versions
MitsubishielectricMelsec L26cpu-P FirmwareAll versions
MitsubishielectricMelsec L26cpu-Pbt FirmwareAll versions
MitsubishielectricMelsec Q-Q170mcpu FirmwareAll versions
MitsubishielectricMelsec Q-Q170mscpu-S1 FirmwareAll versions
MitsubishielectricMelsec Q-Q172dcpu-S1 FirmwareAll versions
MitsubishielectricMelsec Q-Q172dscpu FirmwareAll versions
MitsubishielectricMelsec Q-Q173dcpu-S1 FirmwareAll versions
MitsubishielectricMelsec Q-Q173dscpu FirmwareAll versions

Showing 50 of 51 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-5652?
Uncontrolled resource consumption vulnerability in Ethernet Port on MELSEC iQ-R, Q and L series CPU modules (R 00/01/02 CPU firmware versions '20' and earlier, R 04/08/16/32/120 (EN) CPU firmware versions '52' and earlier, R 08/16/32/120 SFCPU firmware versions '22' and earlier, R 08/16/32/120 PCPU all versions, R 08/16/32/120 PSFCPU all versions, R 16/32/64 MTCPU all versions, Q03 UDECPU, Q 04/06/10/13/20/26/50/100 UDEHCPU serial number '22081' and earlier , Q 03/04/06/13/26 UDVCPU serial number '22031' and earlier, Q 04/06/13/26 UDPVCPU serial number '22031' and earlier, Q 172/173 DCPU all versions, Q 172/173 DSCPU all versions, Q 170 MCPU all versions, Q 170 MSCPU all versions, L 02/06/26 CPU (-P) and L 26 CPU - (P) BT all versions) allows a remote unauthenticated attacker to stop the Ethernet communication functions of the products via a specially crafted packet, which may lead to a denial of service (DoS) condition .
How severe is CVE-2020-5652?
CVE-2020-5652 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.53% probability of exploitation in the next 30 days.
How do I fix CVE-2020-5652?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-5652?

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Source: NVD / NIST