Vulnerability · Published Nov 16, 2020 · Assigned by jpcert
CVE-2020-5666
High 7.5
In plain English
A high-severity security flaw in MELSEC iQ-R Series CPU Modules from Mitsubishi Electric Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 8.8% (higher than 95% of all known vulnerabilities).
Severity (CVSS NVD)7.5High
Exploit odds (30 days)8.8%top 4.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mitsubishi Electric Corporation | 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' |
References
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-015_en.pdf x_refsource_MISC
- https://jvn.jp/jp/JVN44764844/index.html x_refsource_MISC
- https://jvn.jp/en/jp/JVN44764844/index.html x_refsource_MISC
- https://us-cert.cisa.gov/ics/advisories/icsa-20-317-01 x_refsource_MISC