Resource exhaustion in Mitsubishielectric R12ccpu-V
CVE-2021-20600
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.024 (83.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000
Affected products
- Mitsubishielectric R12ccpu-V
- Mitsubishielectric R12ccpu-V Firmware
- Mitsubishi Electric Melsec Iq-R Series C Controller Module R12ccpu-V — versions Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V Firmware Versions "16" and prior
Weakness classification (CWE)
References
- www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-015_en.pdf (Vendor Advisory)
- jvn.jp/vu/JVNVU94914666/index.html (Third Party Advisory)
- us-cert.cisa.gov/ics/advisories/icsa-21-280-04 (US Government Resource, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-20600?
- CVE-2021-20600 is a medium-severity vulnerability in Mitsubishielectric R12ccpu-V, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2021-10-08.
- How severe is CVE-2021-20600?
- Medium severity. CVSS v3 base score is 5.9 out of 10.