{"id":"CVE-2021-33315","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-33315","generatedAt":"2026-10-27T20:22:13.279Z","title":"The TRENDnet TI-PG1284i switch(hw v2.0R) prior to version 2.0.2.S0 suffers from an integer underflow vulnerability.","description":"The TRENDnet TI-PG1284i switch(hw v2.0R) prior to version 2.0.2.S0 suffers from an integer underflow vulnerability. This vulnerability exists in its lldp related component. Due to lack of proper validation on length field of PortID TLV, by sending a crafted lldp packet to the device, integer underflow would occur and the negative number will be passed to memcpy() later, which may cause buffer overflow or invalid memory access.","published":"2022-05-11T18:15:23.000Z","lastModified":"2026-06-17T03:54:26.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-20"],"affected":["trendnet/ti-pg1284i firmware","trendnet/ti-g102i firmware","trendnet/ti-g160i firmware","trendnet/ti-g642i firmware","trendnet/ti-pg102i firmware","trendnet/ti-pg541i firmware","trendnet/ti-rp262i firmware","trendnet/teg-30102ws firmware","trendnet/tpe-30102ws firmware"],"epss":{"score":0.01068,"percentile":0.64576,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.07%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.trendnet.com/support/view.asp?cat=4&id=81","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.trendnet.com/support/view.asp?cat=4&id=81","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-33315","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}