{"id":"CVE-2023-51394","aliases":["EUVD-2023-56115","GHSA-fc74-wgp6-2pv9"],"status":"published","title":"Potential DoS for EFR32xxx parts in high traffic environments due to null buffer dereference / crash","description":"High traffic environments may result in NULL Pointer Dereference vulnerability in Silicon Labs's Ember ZNet SDK before v7.4.0, causing a system crash.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00515,"percentile":0.44346,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2024-02-23T19:13:37Z","modified":"2026-06-17T06:40:52Z","products":[{"vendor":"silabs","product":"emberznet"},{"vendor":"silabs","product":"emberznet_sdk"},{"vendor":"silabs.com","product":"ember znet sdk"}],"references":[{"url":"https://community.silabs.com/068Vm000001NL4u","tags":["x_transferred","Permissions Required"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-51394"},{"url":"https://github.com/advisories/GHSA-fc74-wgp6-2pv9"}],"sources":{"cve":[{"id":"CVE-2023-51394","title":"Potential DoS for EFR32xxx parts in high traffic environments due to null buffer dereference / crash","description":"High traffic environments may result in NULL Pointer Dereference vulnerability in Silicon Labs's Ember ZNet SDK before v7.4.0, causing a system crash.","status":"published","published":"2024-02-23T19:13:37.199Z","modified":"2024-08-16T19:31:32.322Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:35:17.48054Z"}],"euvd":[{"id":"EUVD-2023-56115","description":"High traffic environments may result in NULL Pointer Dereference vulnerability in Silicon Labs's Ember ZNet SDK before v7.4.0, causing a system crash.","status":"published","published":"2024-02-23T19:13:37Z","modified":"2024-08-16T19:31:32Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T00:56:16.145705Z"}],"ghsa":[{"id":"GHSA-fc74-wgp6-2pv9","title":"High traffic environments may result in NULL Pointer Dereference vulnerability in Silicon Labs's...","description":"High traffic environments may result in NULL Pointer Dereference vulnerability in Silicon Labs's Ember ZNet SDK before v7.4.0, causing a system crash.","status":"published","published":"2024-02-23T21:30:47Z","modified":"2026-03-26T05:02:30Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T15:06:52.37988Z"}],"nvd":[{"id":"CVE-2023-51394","description":"High traffic environments may result in NULL Pointer Dereference vulnerability in Silicon Labs's Ember ZNet SDK before v7.4.0, causing a system crash.","status":"published","published":"2024-02-23T20:15:51.88Z","modified":"2026-06-17T06:40:52.29Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"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"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:09:07.077422Z"}]}}