{"id":"CVE-2019-6820","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-6820","generatedAt":"2026-10-27T23:25:49.623Z","title":"A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification of device IP configuration (IP address, network mask and gateway IP address) when a specific Ethernet frame is received in all versions of:…","description":"A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification of device IP configuration (IP address, network mask and gateway IP address) when a specific Ethernet frame is received in all versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2","published":"2019-05-22T20:29:02.000Z","lastModified":"2026-06-17T02:39:44.000Z","status":"Modified","sourceIdentifier":"cybersecurity@se.com","cvss":{"version":"3.1","score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"},"cwe":["CWE-306"],"affected":["schneider-electric/modicon m100 firmware","schneider-electric/modicon m200 firmware","schneider-electric/modicon m221 firmware","schneider-electric/atv imc drive controller firmware","schneider-electric/modicon m241 firmware","schneider-electric/modicon m251 firmware","schneider-electric/modicon m258 firmware","schneider-electric/modicon lmc058 firmware","schneider-electric/modicon lmc078 firmware","schneider-electric/pacdrive eco firmware","schneider-electric/pacdrive pro firmware","schneider-electric/pacdrive pro2 firmware"],"epss":{"score":0.01275,"percentile":0.69725,"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 (1.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2019-134-02/","tags":["Vendor Advisory"],"source":"cybersecurity@se.com"},{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2019-134-02/","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-6820","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."}