{"id":"CVE-2021-20987","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-20987","generatedAt":"2026-10-27T23:30:00.600Z","title":"A denial of service and memory corruption vulnerability was found in Hilscher EtherNet/IP Core V2 prior to V2.13.0.21that may lead to code injection through network or make devices crash without recovery.","description":"A denial of service and memory corruption vulnerability was found in Hilscher EtherNet/IP Core V2 prior to V2.13.0.21that may lead to code injection through network or make devices crash without recovery.","published":"2021-02-16T17:15:13.000Z","lastModified":"2026-06-17T03:34:36.000Z","status":"Modified","sourceIdentifier":"info@cert.vde.com","cvss":{"version":"3.1","score":8.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H"},"cwe":["CWE-787"],"affected":["hilscher/ethernet\\/ip adapter firmware","pepperl-fuchs/wcs firmware","pepperl-fuchs/pxv100-f200-b25-v1d firmware","pepperl-fuchs/pxv100i-f200-b25-v1d firmware","pepperl-fuchs/pcv100-f200-b25-v1d-6011-6720 firmware","pepperl-fuchs/pcv50-f200-b25-v1d firmware","pepperl-fuchs/pcv80-f200-b25-v1d firmware","pepperl-fuchs/pcv100-f200-b25-v1d-6011 firmware"],"epss":{"score":0.01138,"percentile":0.66346,"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 (1.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://cert.vde.com/en-us/advisories/vde-2021-007","tags":["Third Party Advisory"],"source":"info@cert.vde.com"},{"url":"https://kb.hilscher.com/pages/viewpage.action?pageId=108969480","tags":["Vendor Advisory"],"source":"info@cert.vde.com"},{"url":"https://cert.vde.com/en-us/advisories/vde-2021-007","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://kb.hilscher.com/pages/viewpage.action?pageId=108969480","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-20987","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."}