{"id":"CVE-2026-76784","aliases":["EUVD-2026-66641","GHSA-pfwg-rgvf-86xw"],"status":"published","title":"Insufficient Cryptographic Protections in Local Device Communication Protocol on Multiple TP-Link Kasa Smart Home Devices","description":"Multiple\nTP-Link Kasa smart home devices contain insufficient cryptographic protections\nin the local device communication protocol. An adjacent network attacker may\nintercept, replay or forge locally exchanged control messages, potentially\nresulting in unauthorized device control. \n\n\n\n\n\n\n\n\n\nSuccessful\nexploitation could allow an attacker to manipulate the operational state of an\naffected device, resulting in unauthorized state changes, disruption of normal\ndevice functionality or a denial-of-service condition.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00197,"percentile":0.09484,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-325"],"published":"2026-08-26T17:47:54Z","modified":"2026-08-28T19:02:53Z","products":[{"vendor":"tp-link systems inc.","product":"ep10"},{"vendor":"tp-link systems inc.","product":"ep25 v2"},{"vendor":"tp-link systems inc.","product":"ep40a"},{"vendor":"tp-link systems inc.","product":"ep40m"},{"vendor":"tp-link systems inc.","product":"es20m"},{"vendor":"tp-link systems inc.","product":"hs103p3 / hs103p4 v5"},{"vendor":"tp-link systems inc.","product":"hs200 v5.26"},{"vendor":"tp-link systems inc.","product":"hs220 v3.26"},{"vendor":"tp-link systems inc.","product":"hs220-la(us) 4.6 / hs220-bl(us) 4.6"},{"vendor":"tp-link systems inc.","product":"hs220-la(us) 6.6 / hs220-bl(us) 6.6"},{"vendor":"tp-link systems inc.","product":"hs300 v2"},{"vendor":"tp-link systems inc.","product":"kl125"},{"vendor":"tp-link systems inc.","product":"kp115"},{"vendor":"tp-link systems inc.","product":"kp125mp2 / kp125mp4"},{"vendor":"tp-link systems inc.","product":"kp200 v3"},{"vendor":"tp-link systems inc.","product":"kp303 v2"},{"vendor":"tp-link systems inc.","product":"ks205"},{"vendor":"tp-link systems inc.","product":"ks220m"},{"vendor":"tp-link systems inc.","product":"ks225"},{"vendor":"tp-link systems inc.","product":"ks240"}],"references":[{"url":"https://www.tp-link.com/us/support/download/","tags":["patch"]},{"url":"https://www.tp-link.com/en/support/download/","tags":["patch"]},{"url":"https://www.tp-link.com/in/support/download/","tags":["patch"]},{"url":"https://www.tp-link.com/us/support/faq/5267/","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-76784"},{"url":"https://www.tp-link.com/en/support/download"},{"url":"https://www.tp-link.com/in/support/download"},{"url":"https://www.tp-link.com/us/support/download"},{"url":"https://www.tp-link.com/us/support/faq/5267"},{"url":"https://github.com/advisories/GHSA-pfwg-rgvf-86xw"}],"sources":{"cve":[{"id":"CVE-2026-76784","title":"Insufficient Cryptographic Protections in Local Device Communication Protocol on Multiple TP-Link Kasa Smart Home Devices","description":"Multiple\nTP-Link Kasa smart home devices contain insufficient cryptographic protections\nin the local device communication protocol. An adjacent network attacker may\nintercept, replay or forge locally exchanged control messages, potentially\nresulting in unauthorized device control. \n\n\n\n\n\n\n\n\n\nSuccessful\nexploitation could allow an attacker to manipulate the operational state of an\naffected device, resulting in unauthorized state changes, disruption of normal\ndevice functionality or a denial-of-service condition.","status":"published","published":"2026-08-26T17:47:54.278Z","modified":"2026-08-26T18:50:19.86Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-325"],"updated_at":"2026-11-02T13:46:21.568011Z"}],"euvd":[{"id":"EUVD-2026-66641","description":"Multiple\nTP-Link Kasa smart home devices contain insufficient cryptographic protections\nin the local device communication protocol. An adjacent network attacker may\nintercept, replay or forge locally exchanged control messages, potentially\nresulting in unauthorized device control. \n\n\n\n\n\n\n\n\n\nSuccessful\nexploitation could allow an attacker to manipulate the operational state of an\naffected device, resulting in unauthorized state changes, disruption of normal\ndevice functionality or a denial-of-service condition.","status":"published","published":"2026-08-26T17:47:54Z","modified":"2026-08-26T18:50:19Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:01:29.635922Z"}],"ghsa":[{"id":"GHSA-pfwg-rgvf-86xw","title":"Multiple\nTP-Link Kasa smart home devices contain insufficient cryptographic protections\nin the...","description":"Multiple\nTP-Link Kasa smart home devices contain insufficient cryptographic protections\nin the local device communication protocol. An adjacent network attacker may\nintercept, replay or forge locally exchanged control messages, potentially\nresulting in unauthorized device control. \n\n\n\n\n\n\n\n\n\nSuccessful\nexploitation could allow an attacker to manipulate the operational state of an\naffected device, resulting in unauthorized state changes, disruption of normal\ndevice functionality or a denial-of-service condition.","status":"published","published":"2026-08-26T18:31:57Z","modified":"2026-08-26T18:32:06Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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":"high"}],"cwes":["CWE-325"],"updated_at":"2026-11-02T15:10:59.944342Z"}],"nvd":[{"id":"CVE-2026-76784","description":"Multiple\nTP-Link Kasa smart home devices contain insufficient cryptographic protections\nin the local device communication protocol. An adjacent network attacker may\nintercept, replay or forge locally exchanged control messages, potentially\nresulting in unauthorized device control. \n\n\n\n\n\n\n\n\n\nSuccessful\nexploitation could allow an attacker to manipulate the operational state of an\naffected device, resulting in unauthorized state changes, disruption of normal\ndevice functionality or a denial-of-service condition.","status":"published","published":"2026-08-26T18:17:01.903Z","modified":"2026-08-28T19:02:53.76Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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":"high","assessor":"secondary"}],"cwes":["CWE-325"],"updated_at":"2026-11-02T14:12:41.66469Z"}]}}