{"schema":"threatline.record/2","record":{"id":"CVE-2026-109506","aliases":[],"summary":"Improper Authentication in Multiple TP-Link WiFi Repeaters","details":"Multiple\nTP-Link Wi-Fi range extenders use a custom, reversible XOR-and-dictionary\ntransformation in the HTTP web-management login flow. An unauthenticated attacker\non the same local network who can capture the network traffic associated with\nlegitimate administrator login may be able to derive an alternative credential\nvalue that produces the same accepted authentication result and use it to\nauthenticate to the device’s web-management interface with administrator\nprivileges. Exploitation requires the management login to use HTTP and the\nattacker to observe the session key, dictionary, and login value associated\nwith a legitimate administrator login.\n\n\n\n\n\nSuccessful\nexploitation may allow an unauthenticated adjacent attacker to gain\nadministrator access to the affected device and modify exposed configuration\nsettings.","categories":["Network & edge"],"product":"RE190 v5","vendor":"TP-Link Systems Inc.","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE190 v5","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V5_260904","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE200 v5","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V5_260904","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE205 v4","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V4_260904","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE215 v1","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V1_260904","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE220 v3","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V3_260904","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE230 v2","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V2_260904","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE300 v2","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V2_260904","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE305 v4","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V4_260904","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE330 v1","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V1_260904","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE335 v1","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V1_260904","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE365 v2","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V2_260904","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE365 v3","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V3_260904","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE750C v4","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V4_260904","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE450 v4.8","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V4_260915","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE550 v1","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V1_260915","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","source_modified_at":"2026-10-15T19:33:44.764Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"RE315 v1","vendor":"TP-Link Systems Inc.","versions":[{"status":"affected","version":"0","lessThan":"V1_260904 rel3959","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":5.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00346,"percentile":0.2693,"score_date":"2026-10-23"},"published_at":"2026-10-14T18:31:37.228Z","modified_at":"2026-10-15T19:33:44.764Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-109506","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-15T19:33:44.764Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-109506","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://www.tp-link.com/us/support/download/","tags":["patch"]},{"source":"CVE List","url":"https://www.tp-link.com/en/support/download/","tags":["patch"]},{"source":"CVE List","url":"https://www.tp-link.com/us/support/faq/5344/","tags":["vendor-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-15T19:33:36.294343Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-15T19:33:44.764Z","content_hash":"f44b7be60b738d839498142c367915420971fd58949a5bb4b7b79661a40fee61"}}