{"id":"CVE-2023-51392","aliases":["EUVD-2023-56113","GHSA-qfrv-fmc5-hmmh"],"status":"published","title":"Silicon Labs EFR32xxx parts with classic key storage do not use hardware accelerated AES-CCM","description":"Ember ZNet between v7.2.0 and v7.4.0 used software AES-CCM instead of integrated hardware cryptographic accelerators, potentially increasing risk of electromagnetic and differential power analysis sidechannel attacks.","severity":{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00244,"percentile":0.15787,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1240","CWE-327"],"published":"2024-02-23T16:12:41Z","modified":"2026-06-17T06:40:52Z","products":[{"vendor":"silabs","product":"emberznet"},{"vendor":"silabs.com","product":"ember znet sdk"}],"references":[{"url":"https://community.silabs.com/068Vm000001BKm6","tags":["x_transferred","Permissions Required"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-51392"},{"url":"https://github.com/advisories/GHSA-qfrv-fmc5-hmmh"}],"sources":{"cve":[{"id":"CVE-2023-51392","title":"Silicon Labs EFR32xxx parts with classic key storage do not use hardware accelerated AES-CCM","description":"Ember ZNet between v7.2.0 and v7.4.0 used software AES-CCM instead of integrated hardware cryptographic accelerators, potentially increasing risk of electromagnetic and differential power analysis sidechannel attacks.","status":"published","published":"2024-02-23T16:12:41.261Z","modified":"2025-04-22T16:15:25.335Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-1240"],"updated_at":"2026-11-02T14:35:17.48054Z"}],"euvd":[{"id":"EUVD-2023-56113","description":"Ember ZNet between v7.2.0 and v7.4.0 used software AES-CCM instead of integrated hardware cryptographic accelerators, potentially increasing risk of electromagnetic and differential power analysis sidechannel attacks.","status":"published","published":"2024-02-23T16:12:41Z","modified":"2025-04-22T16:15:25Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T20:52:16.055056Z"}],"ghsa":[{"id":"GHSA-qfrv-fmc5-hmmh","title":"Ember ZNet between v7.2.0 and v7.4.0 used software AES-CCM instead of integrated hardware...","description":"Ember ZNet between v7.2.0 and v7.4.0 used software AES-CCM instead of integrated hardware cryptographic accelerators, potentially increasing risk of electromagnetic and differential power analysis sidechannel attacks.","status":"published","published":"2024-02-23T18:30:59Z","modified":"2026-03-26T05:00:42Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-327","CWE-1240"],"updated_at":"2026-11-02T15:06:52.37988Z"}],"nvd":[{"id":"CVE-2023-51392","description":"Ember ZNet between v7.2.0 and v7.4.0 used software AES-CCM instead of integrated hardware cryptographic accelerators, potentially increasing risk of electromagnetic and differential power analysis sidechannel attacks.","status":"published","published":"2024-02-23T17:15:07.84Z","modified":"2026-06-17T06:40:52.033Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-1240","CWE-327"],"updated_at":"2026-11-02T14:09:07.077422Z"}]}}