{"id":"CVE-2021-20094","aliases":["EUVD-2021-7551","GHSA-fm8v-xp26-8h3q"],"status":"published","title":"A denial of service vulnerability exists in Wibu-Systems CodeMeter versions \u003c 7.21a. An...","description":"A denial of service vulnerability exists in Wibu-Systems CodeMeter versions \u003c 7.21a. An unauthenticated remote attacker can exploit this issue to crash the CodeMeter Runtime Server.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.04673,"percentile":0.91884,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2021-06-16T11:09:07Z","modified":"2026-06-17T03:33:15Z","products":[{"vendor":"siemens","product":"pss_cape"},{"vendor":"siemens","product":"sicam_230_firmware"},{"vendor":"wibu","product":"codemeter"},{"vendor":"wibu-systems","product":"wibu-systems codemeter"}],"references":[{"url":"https://www.tenable.com/security/research/tra-2021-24","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Third Party Advisory"]},{"url":"https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/Advisory_WIBU-210423-02.pdf","tags":["x_refsource_MISC","x_transferred","Mitigation","Vendor Advisory"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-675303.pdf","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory"]},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-210-02","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20094"},{"url":"https://github.com/advisories/GHSA-fm8v-xp26-8h3q"}],"sources":{"cve":[{"id":"CVE-2021-20094","description":"A denial of service vulnerability exists in Wibu-Systems CodeMeter versions \u003c 7.21a. An unauthenticated remote attacker can exploit this issue to crash the CodeMeter Runtime Server.","status":"published","published":"2021-06-16T11:09:07Z","modified":"2024-08-03T17:30:07.586Z","updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-7551","description":"A denial of service vulnerability exists in Wibu-Systems CodeMeter versions \u003c 7.21a. An unauthenticated remote attacker can exploit this issue to crash the CodeMeter Runtime Server.","status":"published","published":"2021-06-16T11:09:07Z","modified":"2024-08-03T17:30:07Z","updated_at":"2026-11-03T03:25:09.841069Z"}],"ghsa":[{"id":"GHSA-fm8v-xp26-8h3q","title":"A denial of service vulnerability exists in Wibu-Systems CodeMeter versions \u003c 7.21a. An...","description":"A denial of service vulnerability exists in Wibu-Systems CodeMeter versions \u003c 7.21a. An unauthenticated remote attacker can exploit this issue to crash the CodeMeter Runtime Server.","status":"published","published":"2022-05-24T19:05:32Z","modified":"2023-01-29T05:08:02Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:46:12.058225Z"}],"nvd":[{"id":"CVE-2021-20094","description":"A denial of service vulnerability exists in Wibu-Systems CodeMeter versions \u003c 7.21a. An unauthenticated remote attacker can exploit this issue to crash the CodeMeter Runtime Server.","status":"published","published":"2021-06-16T12:15:12.073Z","modified":"2026-06-17T03:33:15.963Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:06:54.892562Z"}]}}