{"schemaVersion":3,"id":"CVE-2026-85031","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability was found in TOTOLINK CP450 4.1.0. The impacted element is an unknown function of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument topicurl results in buffer overflow. Remote exploitation of the attack is possible.","dates":{"published":"2026-09-03T02:00:13.925Z","modified":"2026-09-03T12:50:35.023Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.9,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":9.4,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":9.9,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":9.9,"severity":"critical","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"CVE.org","score":9,"severity":"high","vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":8.6,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.9,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":9,"severity":"high","vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00792,"percentile":0.55791,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.213,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00579},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00792,"percentile":0.55791}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00792,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00792,"percentile":0.55791}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer","description":"The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/119.html"},{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","description":"The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/120.html"}],"affected":[{"vendor":"totolink","product":"cp450_firmware","name":"cp450 firmware","label":"cp450_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"4.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"4.1.0","eol":null,"hubHref":"/vendor/totolink/cp450"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://vuldb.com/vuln/398296","label":"vuldb.com/vuln/398296","hostname":"vuldb.com","tags":["VDB Entry","Technical Description"]},{"url":"https://vuldb.com/vuln/398296/cti","label":"vuldb.com/vuln/398296/cti","hostname":"vuldb.com","tags":["Signature","Permissions Required"]},{"url":"https://vuldb.com/cve/CVE-2026-85031","label":"vuldb.com/cve/CVE-2026-85031","hostname":"vuldb.com","tags":["Third Party Advisory"]},{"url":"https://vuldb.com/submit/853096","label":"vuldb.com/submit/853096","hostname":"vuldb.com","tags":["Third Party Advisory"]},{"url":"https://www.totolink.net/","label":"www.totolink.net","hostname":"www.totolink.net","tags":["Product"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-09-03T02:00:13.925Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-03T12:50:35.023Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T08:54:03.263Z","stale":false,"partial":false}}