{"cve":"CVE-2020-13238","nvd":{"published":"2020-06-10T20:15:14.140","modified":"2026-06-17T02:52:46.690","status":"Modified","description":"Mitsubishi MELSEC iQ-R Series PLCs with firmware 33 allow attackers to halt the industrial process by sending an unauthenticated crafted packet over the network, because this denial of service attack consumes excessive CPU time. After halting, physical access to the PLC is required in order to restore production.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400"],"references":["http://jvn.jp/vu/JVNVU97662844/index.html","https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-001_en.pdf","https://www.us-cert.gov/ics/advisories/icsa-20-161-02","http://jvn.jp/vu/JVNVU97662844/index.html","https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-001_en.pdf"],"products":["mitsubishielectric:melsec_iq-r00cpu_firmware","mitsubishielectric:melsec_iq-r01cpu_firmware","mitsubishielectric:melsec_iq-r02cpu_firmware","mitsubishielectric:melsec_iq-r04cpu_firmware","mitsubishielectric:melsec_iq-r08cpu_firmware","mitsubishielectric:melsec_iq-r08fcpu_firmware","mitsubishielectric:melsec_iq-r08pcpu_firmware","mitsubishielectric:melsec_iq-r08sfcpu_firmware","mitsubishielectric:melsec_iq-r120cpu_firmware","mitsubishielectric:melsec_iq-r120fcpu_firmware","mitsubishielectric:melsec_iq-r120pcpu_firmware","mitsubishielectric:melsec_iq-r120sfcpu_firmware","mitsubishielectric:melsec_iq-r16cpu_firmware","mitsubishielectric:melsec_iq-r16fcpu_firmware","mitsubishielectric:melsec_iq-r16pcpu_firmware","mitsubishielectric:melsec_iq-r16sfcpu_firmware","mitsubishielectric:melsec_iq-r32cpu_firmware","mitsubishielectric:melsec_iq-r32fcpu_firmware","mitsubishielectric:melsec_iq-r32pcpu_firmware","mitsubishielectric:melsec_iq-r32sfcpu_firmware","mitsubishielectric:melsec_iq-rj71en71_firmware"],"source":"nvd","synced_at":"2026-10-19T21:05:42.039641217+00:00"},"epss":{"cve":"CVE-2020-13238","score":0.0342,"percentile":0.88903,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}