{"id":"CVE-2021-33317","aliases":["EUVD-2021-20027","GHSA-mp5j-gcgv-qr44"],"status":"published","title":"The TRENDnet TI-PG1284i switch(hw v2.0R) prior to version 2.0.2.S0 suffers from a null pointer...","description":"The TRENDnet TI-PG1284i switch(hw v2.0R) prior to version 2.0.2.S0 suffers from a null pointer dereference vulnerability. This vulnerability exists in its lldp related component. Due to fail to check if ChassisID TLV is contained in the packet, by sending a crafted lldp packet to the device, an attacker can crash the process due to null pointer dereference.","severity":{"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","from":"nvd"},"epss":{"day":"2026-11-10","score":0.0093,"percentile":0.609,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2022-05-11T17:34:25Z","modified":"2026-06-17T03:54:26Z","products":[{"vendor":"trendnet","product":"teg-30102ws_firmware"},{"vendor":"trendnet","product":"ti-g102i_firmware"},{"vendor":"trendnet","product":"ti-g160i_firmware"},{"vendor":"trendnet","product":"ti-g642i_firmware"},{"vendor":"trendnet","product":"ti-pg102i_firmware"},{"vendor":"trendnet","product":"ti-pg1284i_firmware"},{"vendor":"trendnet","product":"ti-pg541i_firmware"},{"vendor":"trendnet","product":"ti-rp262i_firmware"},{"vendor":"trendnet","product":"tpe-30102ws_firmware"}],"references":[{"url":"https://www.trendnet.com/support/view.asp?cat=4\u0026id=81","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33317"},{"url":"https://github.com/advisories/GHSA-mp5j-gcgv-qr44"}],"sources":{"cve":[{"id":"CVE-2021-33317","description":"The TRENDnet TI-PG1284i switch(hw v2.0R) prior to version 2.0.2.S0 suffers from a null pointer dereference vulnerability. This vulnerability exists in its lldp related component. Due to fail to check if ChassisID TLV is contained in the packet, by sending a crafted lldp packet to the device, an attacker can crash the process due to null pointer dereference.","status":"published","published":"2022-05-11T17:34:25Z","modified":"2024-08-03T23:50:41.433Z","updated_at":"2026-11-02T14:33:10.204494Z"}],"euvd":[{"id":"EUVD-2021-20027","description":"The TRENDnet TI-PG1284i switch(hw v2.0R) prior to version 2.0.2.S0 suffers from a null pointer dereference vulnerability. This vulnerability exists in its lldp related component. Due to fail to check if ChassisID TLV is contained in the packet, by sending a crafted lldp packet to the device, an attacker can crash the process due to null pointer dereference.","status":"published","published":"2022-05-11T17:34:25Z","modified":"2024-08-03T23:50:41Z","updated_at":"2026-11-03T03:24:34.73748Z"}],"ghsa":[{"id":"GHSA-mp5j-gcgv-qr44","title":"The TRENDnet TI-PG1284i switch(hw v2.0R) prior to version 2.0.2.S0 suffers from a null pointer...","description":"The TRENDnet TI-PG1284i switch(hw v2.0R) prior to version 2.0.2.S0 suffers from a null pointer dereference vulnerability. This vulnerability exists in its lldp related component. Due to fail to check if ChassisID TLV is contained in the packet, by sending a crafted lldp packet to the device, an attacker can crash the process due to null pointer dereference.","status":"published","published":"2022-05-12T00:00:40Z","modified":"2023-02-01T05:02:14Z","cvss":[{"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"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:49:52.298896Z"}],"nvd":[{"id":"CVE-2021-33317","description":"The TRENDnet TI-PG1284i switch(hw v2.0R) prior to version 2.0.2.S0 suffers from a null pointer dereference vulnerability. This vulnerability exists in its lldp related component. Due to fail to check if ChassisID TLV is contained in the packet, by sending a crafted lldp packet to the device, an attacker can crash the process due to null pointer dereference.","status":"published","published":"2022-05-11T18:15:22.783Z","modified":"2026-06-17T03:54:26.18Z","cvss":[{"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"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:07:06.029737Z"}]}}