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CVE-2020-5668

HIGHCVSS 7.5/10EPSS 4.73%

Last modified

CVE-2020-5668 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series modules (R00/01/02CPU firmware version '19' and earlier, R04/08/16/32/120 (EN) CPU firmware version '51' and earlier, R08/16/32/120SFCPU firmware version '22' and earlier, R08/16/32/120PCPU firmware version '25' and earlier, R08/16/32/120PSFCPU firmware version '06' and earlier, RJ71EN71 firmware version '47' and earlier, RJ71GF11-T2 firmware version '47' and earlier, RJ72GF15-T2 firmware version '07' and earlier, RJ71GP21-SX firmware version '47' and earlier, RJ71GP21S-SX firmware version '47' and earlier, and RJ71GN11-T2 firmware version '11' and earlier) allows a remote unauthenticated attacker to cause an error in a CPU unit and cause a denial-of-service (DoS) condition in execution of the program and its communication, or to cause a denial-of-service (DoS) condition in communication via the unit by receiving a specially crafted SLMP packet. EPSS estimates a 4.73% chance of exploitation in the next 30 days.

Description

Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series modules (R00/01/02CPU firmware version '19' and earlier, R04/08/16/32/120 (EN) CPU firmware version '51' and earlier, R08/16/32/120SFCPU firmware version '22' and earlier, R08/16/32/120PCPU firmware version '25' and earlier, R08/16/32/120PSFCPU firmware version '06' and earlier, RJ71EN71 firmware version '47' and earlier, RJ71GF11-T2 firmware version '47' and earlier, RJ72GF15-T2 firmware version '07' and earlier, RJ71GP21-SX firmware version '47' and earlier, RJ71GP21S-SX firmware version '47' and earlier, and RJ71GN11-T2 firmware version '11' and earlier) allows a remote unauthenticated attacker to cause an error in a CPU unit and cause a denial-of-service (DoS) condition in execution of the program and its communication, or to cause a denial-of-service (DoS) condition in communication via the unit by receiving a specially crafted SLMP packet

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
4.73%

90.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MitsubishielectricR00cpu Firmware<= 19
MitsubishielectricR01cpu Firmware<= 19
MitsubishielectricR02cpu Firmware<= 19
MitsubishielectricR04cpu Firmware<= 51
MitsubishielectricR08cpu Firmware<= 51
MitsubishielectricR16cpu Firmware<= 51
MitsubishielectricR32cpu Firmware<= 51
MitsubishielectricR120cpu Firmware<= 51
MitsubishielectricR08sfcpu Firmware<= 22
MitsubishielectricR16sfcpu Firmware<= 22
MitsubishielectricR32sfcpu Firmware<= 22
MitsubishielectricR120sfcpu Firmware<= 22
MitsubishielectricR08pcpu Firmware<= 25
MitsubishielectricR16pcpu Firmware<= 25
MitsubishielectricR32pcpu Firmware<= 25
MitsubishielectricR120pcpu Firmware<= 25
MitsubishielectricR08psfcpu Firmware<= 06
MitsubishielectricR16psfcpu Firmware<= 06
MitsubishielectricR32psfcpu Firmware<= 06
MitsubishielectricR120psfcpu Firmware<= 06
MitsubishielectricRj71en71 Firmware<= 47
MitsubishielectricRj71gf11-T2 Firmware<= 47
MitsubishielectricRj72gf15-T2 Firmware<= 07
MitsubishielectricRj71gp21-Sx Firmware<= 47
MitsubishielectricRj71gp21s-Sx Firmware<= 47
MitsubishielectricRj71c24-R2 Firmware<= 47
MitsubishielectricRj71c24-R4 Firmware<= 47
MitsubishielectricRj71gn11-T2 Firmware<= 11

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-5668?
Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series modules (R00/01/02CPU firmware version '19' and earlier, R04/08/16/32/120 (EN) CPU firmware version '51' and earlier, R08/16/32/120SFCPU firmware version '22' and earlier, R08/16/32/120PCPU firmware version '25' and earlier, R08/16/32/120PSFCPU firmware version '06' and earlier, RJ71EN71 firmware version '47' and earlier, RJ71GF11-T2 firmware version '47' and earlier, RJ72GF15-T2 firmware version '07' and earlier, RJ71GP21-SX firmware version '47' and earlier, RJ71GP21S-SX firmware version '47' and earlier, and RJ71GN11-T2 firmware version '11' and earlier) allows a remote unauthenticated attacker to cause an error in a CPU unit and cause a denial-of-service (DoS) condition in execution of the program and its communication, or to cause a denial-of-service (DoS) condition in communication via the unit by receiving a specially crafted SLMP packet
How severe is CVE-2020-5668?
CVE-2020-5668 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.73% probability of exploitation in the next 30 days.
How do I fix CVE-2020-5668?
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-2020-5668?

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Source: NVD / NIST