{"id":"CVE-2026-18330","aliases":["EUVD-2026-70819","GHSA-6x43-g54r-9p4x"],"status":"published","title":"Hardcoded Shared RSA-1024 Private Key in Web Login in TP-Link RE305 and Archer C7","description":"A hard-coded\ncryptographic key vulnerability exists in TP-Link RE305 V3 and Archer C7 V5.\nThe same RSA-1024 private key is stored within firmware configuration files and\nreused across devices. An attacker who obtains the private key and captures an\nHTTP Web UI login session may use the key to decrypt the administrator\npassword. \n\n\n\n\n\nSuccessful\nexploitation may disclose the administrator password captured from an HTTP\nlogin session and compromise session confidentiality.","severity":{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00327,"percentile":0.26091,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-321"],"published":"2026-09-03T22:24:45Z","modified":"2026-10-27T18:31:17Z","products":[{"vendor":"tp-link systems inc.","product":"archer c7 v5"},{"vendor":"tp-link systems inc.","product":"re305 v3"}],"references":[{"url":"https://www.tp-link.com/us/support/download/re305/v3/#Firmware","tags":["patch"]},{"url":"https://www.tp-link.com/en/support/download/re305/v3/#Firmware","tags":["patch"]},{"url":"https://www.tp-link.com/en/support/download/archer-c7/v5/#Firmware","tags":["patch"]},{"url":"https://www.tp-link.com/us/support/download/archer-c7/v5/#Firmware","tags":["patch"]},{"url":"https://www.tp-link.com/us/support/faq/5362/","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18330"},{"url":"https://www.tp-link.com/us/support/download/archer-ax55/v4/#Firmware"},{"url":"https://www.tp-link.com/us/support/faq/5279"},{"url":"https://www.tp-link.com/us/support/faq/5362"},{"url":"https://github.com/advisories/GHSA-6x43-g54r-9p4x"}],"sources":{"cve":[{"id":"CVE-2026-18330","title":"Hardcoded Shared RSA-1024 Private Key in Web Login in TP-Link RE305 and Archer C7","description":"A hard-coded\ncryptographic key vulnerability exists in TP-Link RE305 V3 and Archer C7 V5.\nThe same RSA-1024 private key is stored within firmware configuration files and\nreused across devices. An attacker who obtains the private key and captures an\nHTTP Web UI login session may use the key to decrypt the administrator\npassword. \n\n\n\n\n\nSuccessful\nexploitation may disclose the administrator password captured from an HTTP\nlogin session and compromise session confidentiality.","status":"published","published":"2026-09-03T22:24:45.43Z","modified":"2026-10-27T17:39:53.63Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-321"],"updated_at":"2026-11-02T14:20:12.60856Z"}],"euvd":[{"id":"EUVD-2026-70819","description":"A hard-coded\ncryptographic key vulnerability exists in TP-Link RE305 V3 and Archer C7 V5.\nThe same RSA-1024 private key is stored within firmware configuration files and\nreused across devices. An attacker who obtains the private key and captures an\nHTTP Web UI login session may use the key to decrypt the administrator\npassword. \n\n\n\n\n\nSuccessful\nexploitation may disclose the administrator password captured from an HTTP\nlogin session and compromise session confidentiality.","status":"published","published":"2026-09-03T22:24:45Z","modified":"2026-10-27T17:39:53Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:59:23.167941Z"}],"ghsa":[{"id":"GHSA-6x43-g54r-9p4x","title":"A hard-coded\ncryptographic key vulnerability exists in the web module of TP-Link Archer\nAX55 v4....","description":"A hard-coded\ncryptographic key vulnerability exists in the web module of TP-Link Archer\nAX55 v4. A LAN attacker who captures an HTTP login session may use the known\nshared RSA private key to decrypt the administrator password; the\nweakened AES session key further reduces the effort required to\ncompromise session confidentiality.\n\n\n\n\n\nSuccessful\nexploitation may disclose the administrator password captured from an HTTP\nlogin session and compromise session confidentiality.","status":"published","published":"2026-09-04T00:31:06Z","modified":"2026-10-27T18:31:17Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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","level":"medium"}],"cwes":["CWE-321"],"updated_at":"2026-11-02T15:14:30.115077Z"}],"nvd":[{"id":"CVE-2026-18330","description":"A hard-coded\ncryptographic key vulnerability exists in TP-Link RE305 V3 and Archer C7 V5.\nThe same RSA-1024 private key is stored within firmware configuration files and\nreused across devices. An attacker who obtains the private key and captures an\nHTTP Web UI login session may use the key to decrypt the administrator\npassword. \n\n\n\n\n\nSuccessful\nexploitation may disclose the administrator password captured from an HTTP\nlogin session and compromise session confidentiality.","status":"published","published":"2026-09-03T23:17:19.4Z","modified":"2026-10-27T18:17:37.207Z","cvss":[{"version":"4.0","score":6.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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","level":"medium","assessor":"secondary"}],"cwes":["CWE-321"],"updated_at":"2026-11-02T14:12:43.737972Z"}]}}