{"id":"CVE-2021-20024","aliases":["EUVD-2021-7487","GHSA-gp55-8ww8-jfq2"],"status":"published","title":"Multiple Out-of-Bound read vulnerability in SonicWall Switch when handling LLDP Protocol allows...","description":"Multiple Out-of-Bound read vulnerability in SonicWall Switch when handling LLDP Protocol allows an attacker to cause a system instability or potentially read sensitive information from the memory locations.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00635,"percentile":0.50793,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2021-07-09T21:25:09Z","modified":"2026-06-17T03:33:09Z","products":[{"vendor":"sonicwall","product":"sonicwall switch"},{"vendor":"sonicwall","product":"switch"}],"references":[{"url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0011","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20024"},{"url":"https://github.com/advisories/GHSA-gp55-8ww8-jfq2"}],"sources":{"cve":[{"id":"CVE-2021-20024","description":"Multiple Out-of-Bound read vulnerability in SonicWall Switch when handling LLDP Protocol allows an attacker to cause a system instability or potentially read sensitive information from the memory locations.","status":"published","published":"2021-07-09T21:25:09Z","modified":"2024-08-03T17:30:07.421Z","cwes":["CWE-125"],"updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-7487","description":"Multiple Out-of-Bound read vulnerability in SonicWall Switch when handling LLDP Protocol allows an attacker to cause a system instability or potentially read sensitive information from the memory locations.","status":"published","published":"2021-07-09T21:25:09Z","modified":"2024-08-03T17:30:07Z","updated_at":"2026-11-03T03:25:10.418596Z"}],"ghsa":[{"id":"GHSA-gp55-8ww8-jfq2","title":"Multiple Out-of-Bound read vulnerability in SonicWall Switch when handling LLDP Protocol allows...","description":"Multiple Out-of-Bound read vulnerability in SonicWall Switch when handling LLDP Protocol allows an attacker to cause a system instability or potentially read sensitive information from the memory locations.","status":"published","published":"2022-05-24T19:07:24Z","modified":"2023-01-30T05:00:40Z","cwes":["CWE-125"],"updated_at":"2026-11-02T14:46:14.926249Z"}],"nvd":[{"id":"CVE-2021-20024","description":"Multiple Out-of-Bound read vulnerability in SonicWall Switch when handling LLDP Protocol allows an attacker to cause a system instability or potentially read sensitive information from the memory locations.","status":"published","published":"2021-07-09T22:15:08.32Z","modified":"2026-06-17T03:33:09.943Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:A/AC:L/Au:N/C:P/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:06:55.259633Z"}]}}