{"id":"CVE-2020-5654","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-5654","generatedAt":"2026-10-27T23:43:14.734Z","title":"Session fixation vulnerability in TCP/IP function included in the firmware of MELSEC iQ-R series (RJ71EIP91 EtherNet/IP Network Interface Module First 2 digits of serial number are '02' or before, RJ71PN92 PROFINET IO Controller Module First 2 digits of…","description":"Session fixation vulnerability in TCP/IP function included in the firmware of MELSEC iQ-R series (RJ71EIP91 EtherNet/IP Network Interface Module First 2 digits of serial number are '02' or before, RJ71PN92 PROFINET IO Controller Module First 2 digits of serial number are '01' or before, RD81DL96 High Speed Data Logger Module First 2 digits of serial number are '08' or before, RD81MES96N MES Interface Module First 2 digits of serial number are '04' or before, and RD81OPC96 OPC UA Server Module First 2 digits of serial number are '04' or before) allows a remote unauthenticated attacker to stop the network functions of the products via a specially crafted packet.","published":"2020-11-02T21:15:34.000Z","lastModified":"2026-06-17T03:21:48.000Z","status":"Modified","sourceIdentifier":"vultures@jpcert.or.jp","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-384"],"affected":["mitsubishielectric/melsec iq-rj71eip91 firmware","mitsubishielectric/melsec iq-rj71pn92 firmware","mitsubishielectric/melsec iq-rd81dl96 firmware","mitsubishielectric/melsec iq-rd81mes96n firmware","mitsubishielectric/melsec iq-rd81opc96 firmware"],"epss":{"score":0.02736,"percentile":0.86016,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.74%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://jvn.jp/vu/JVNVU92513419/index.html","tags":["Third Party Advisory"],"source":"vultures@jpcert.or.jp"},{"url":"https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-012.pdf","tags":["Vendor Advisory"],"source":"vultures@jpcert.or.jp"},{"url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-012_en.pdf","tags":["Vendor Advisory"],"source":"vultures@jpcert.or.jp"},{"url":"https://jvn.jp/vu/JVNVU92513419/index.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-012.pdf","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-012_en.pdf","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-5654","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}