{"cve":"CVE-2021-30066","nvd":{"published":"2022-04-03T23:15:07.860","modified":"2026-06-17T03:49:39.470","status":"Modified","description":"On Schneider Electric ConneXium Tofino Firewall TCSEFEA23F3F22 before 03.23, TCSEFEA23F3F20/21, and Belden Tofino Xenon Security Appliance, an arbitrary firmware image can be loaded because firmware signature verification (for a USB stick) can be bypassed. NOTE: this issue exists because of an incomplete fix of CVE-2017-11400.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":6.8},"cwes":["CWE-347"],"references":["https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2022-011-05","https://www.belden.com/support/security-assurance","https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2022-011-05","https://www.belden.com/support/security-assurance"],"products":["belden:eagle_20_tofino_943_987-501-tx\\/tx_firmware","belden:eagle_20_tofino_943_987-502_-tx\\/mm_firmware","belden:eagle_20_tofino_943_987-504-mm\\/tx_firmware","belden:eagle_20_tofino_943_987-505-mm\\/mm_firmware","belden:tofino_argon_fa-tsa-100-tx\\/tx_firmware","belden:tofino_argon_fa-tsa-220-mm\\/mm_firmware","belden:tofino_argon_fa-tsa-220-mm\\/tx_firmware","belden:tofino_argon_fa-tsa-220-tx\\/mm_firmware","belden:tofino_argon_fa-tsa-220-tx\\/tx_firmware","belden:tofino_xenon_security_appliance_firmware","schneider-electric:tcsefea23f3f20_firmware","schneider-electric:tcsefea23f3f21_firmware","schneider-electric:tcsefea23f3f22_firmware"],"source":"nvd","synced_at":"2026-10-19T21:29:06.454770966+00:00"},"epss":{"cve":"CVE-2021-30066","score":0.00246,"percentile":0.15867,"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."]}