{"schemaVersion":3,"id":"CVE-2026-75784","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability was detected in TRENDnet TEW-WLC100 1v2.07b01. Affected by this issue is the function FUN_0040da4c of the file /usr/nginx/sbin/nginx of the component HTTP Header Handler. The manipulation of the argument Server results in stack-based buffer overflow. The attack may be launched remotely. The exploit is now public and may be used.","dates":{"published":"2026-08-18T14:00:09.095Z","modified":"2026-08-20T17:20:33.880Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":10,"severity":"critical","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":10,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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":10,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/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":10,"severity":"critical","vector":"CVSS:3.0/AV:N/AC:L/PR:N/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":10,"severity":"high","vector":"AV:N/AC:L/Au:N/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":9.3,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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":10,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/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":10,"severity":"high","vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01096,"percentile":0.65243,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.0749999999999999,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.01021},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01021,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01021,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01021,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01021,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01021,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01021,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01021,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01021,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01021,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01021,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01096,"percentile":0.65243}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.01021,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01021,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01021,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01096,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01096,"percentile":0.65243}]},"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":[{"id":"GITHUB_MEISHIGANA_CVE","name":"Cve","source":"github","url":"https://github.com/meishigana/CVE/blob/main/team15_20260702/01_wlc100p-netifd/poc/poc-netifd-overflow.py","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"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-121","name":"Stack-based Buffer Overflow","description":"A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).","type":"weakness","status":"Draft","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/121.html"}],"affected":[{"vendor":"trendnet","product":"tew-wlc100","name":"TEW-WLC100","label":"tew-wlc100","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"1v2.07b01","noFixRecorded":false,"fixedIn":null}],"versionsText":"1v2.07b01","eol":null,"hubHref":"/vendor/trendnet/tew-wlc100"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://vuldb.com/vuln/391525","label":"vuldb.com/vuln/391525","hostname":"vuldb.com","tags":["VDB Entry","Technical Description"]},{"url":"https://vuldb.com/vuln/391525/cti","label":"vuldb.com/vuln/391525/cti","hostname":"vuldb.com","tags":["Signature","Permissions Required"]},{"url":"https://vuldb.com/cve/CVE-2026-75784","label":"vuldb.com/cve/CVE-2026-75784","hostname":"vuldb.com","tags":["Third Party Advisory"]},{"url":"https://vuldb.com/submit/877773","label":"vuldb.com/submit/877773","hostname":"vuldb.com","tags":["Third Party Advisory"]},{"url":"https://github.com/meishigana/CVE/tree/main/team15_20260702/02_wlc100-nginx","label":"github.com/meishigana/CVE/tree/main/team15_20260702/02_wlc100-nginx","hostname":"github.com","tags":["Related"]},{"url":"https://github.com/meishigana/CVE/blob/main/team15_20260702/02_wlc100-nginx/poc/poc-nginx-overflow.py","label":"github.com/meishigana/CVE/blob/main/team15_20260702/02_wlc100-nginx/poc/poc-nginx-overflow.py","hostname":"github.com","tags":["Exploit"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-08-18T14:00:09.095Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-08-20T17:20:33.880Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":90,"level":"critical","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T18:06:57.436Z","stale":false,"partial":false}}