Vulnerability · Published Oct 8, 2021 · Assigned by Mitsubishi
CVE-2021-20600
Medium 5.9
In plain English
A medium-severity security flaw in Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.4% (higher than 84% of all known vulnerabilities).
Severity (CVSS NVD)5.9Medium
Exploit odds (30 days)2.4%top 16.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Uncontrolled resource consumption in Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V Firmware Versions "16" and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. System reset is required for recovery.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V | Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V Firmware Versions "16" and prior |
References
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-015_en.pdf x_refsource_MISC
- https://jvn.jp/vu/JVNVU94914666/index.html x_refsource_MISC
- https://us-cert.cisa.gov/ics/advisories/icsa-21-280-04 x_refsource_MISC