Resource exhaustion in Mitsubishielectric Melsec Iq-R00
CVE-2020-5666
Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series CPU Modules (R00/01/02CPU Firmware versions from '05' to '19' and R04/08/16/32/120(EN)CPU Firmware versions from '35' to '51') allows a remote attacker to cause an error in a CPU unit via a specially crafted HTTP packet, which may lead to a denial-of-service (DoS) condition in execution of the program and its communication.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.084 (94.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Mitsubishielectric Melsec_iq-r00
- Mitsubishielectric Melsec_iq-r00_firmware
- Mitsubishielectric Melsec_iq-r01
- Mitsubishielectric Melsec_iq-r01_firmware
- Mitsubishielectric Melsec_iq-r02
- Mitsubishielectric Melsec_iq-r02_firmware
- Mitsubishielectric Melsec_iq-r04
- Mitsubishielectric Melsec_iq-r04_firmware
- Mitsubishielectric Melsec_iq-r08
- Mitsubishielectric Melsec_iq-r08_firmware
Weakness classification (CWE)
References
- vultures@jpcert.or.jp (x_refsource_MISC, Mitigation, Vendor Advisory)
- vultures@jpcert.or.jp (Third Party Advisory, x_refsource_MISC)
- vultures@jpcert.or.jp (Third Party Advisory, x_refsource_MISC)
- vultures@jpcert.or.jp (US Government Resource, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-5666?
- CVE-2020-5666 is a high-severity vulnerability in Mitsubishielectric Melsec Iq-R00, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2020-11-16.
- How severe is CVE-2020-5666?
- High severity. CVSS v3 base score is 7.5 out of 10.