{"id":"CVE-2023-6640","aliases":["EUVD-2023-58863","GHSA-q8rx-w8h7-j8xw"],"status":"published","title":"Silicon Labs PC Controller v5.54.0 and Earlier Denial of Service Vulnerability","description":"Malformed S2 Nonce Get Command Class packets can be sent to crash PC Controller v5.54.0 and earlier.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00271,"percentile":0.19471,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-248","CWE-754"],"published":"2024-02-21T19:56:50Z","modified":"2026-06-17T06:51:10Z","products":[{"vendor":"silabs","product":"z-wave_pc-based_controller"},{"vendor":"silabs.com","product":"pc controller"}],"references":[{"url":"https://community.silabs.com/068Vm000001HdNm","tags":["vendor-advisory","permissions-required","x_transferred","Permissions Required"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6640"},{"url":"https://github.com/advisories/GHSA-q8rx-w8h7-j8xw"}],"sources":{"cve":[{"id":"CVE-2023-6640","title":"Silicon Labs PC Controller v5.54.0 and Earlier Denial of Service Vulnerability","description":"Malformed S2 Nonce Get Command Class packets can be sent to crash PC Controller v5.54.0 and earlier.","status":"published","published":"2024-02-21T19:56:50.808Z","modified":"2024-09-27T15:55:02.841Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-248"],"updated_at":"2026-11-02T14:35:25.095989Z"}],"euvd":[{"id":"EUVD-2023-58863","description":"Malformed S2 Nonce Get Command Class packets can be sent to crash PC Controller v5.54.0 and earlier.","status":"published","published":"2024-02-21T19:56:50Z","modified":"2024-09-27T15:55:02Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:28:05.828156Z"}],"ghsa":[{"id":"GHSA-q8rx-w8h7-j8xw","title":"Malformed S2 Nonce Get Command Class packets can be sent to crash PC Controller v5.54.0 and...","description":"Malformed S2 Nonce Get Command Class packets can be sent to crash PC Controller v5.54.0 and earlier. ","status":"published","published":"2024-02-21T21:30:25Z","modified":"2026-03-20T05:02:58Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-248","CWE-754"],"updated_at":"2026-11-02T15:06:43.427844Z"}],"nvd":[{"id":"CVE-2023-6640","description":"Malformed S2 Nonce Get Command Class packets can be sent to crash PC Controller v5.54.0 and earlier.","status":"published","published":"2024-02-21T20:15:46.497Z","modified":"2026-06-17T06:51:10.59Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-248"],"updated_at":"2026-11-02T14:09:07.077422Z"}]}}