{"id":"CVE-2026-1871","aliases":["EUVD-2026-33978","GHSA-92jw-rf4g-rwr2"],"status":"published","title":"Authenticated Stack-based Buffer Overflow in RTSP Authentication of Tapo C200","description":"TP-Link Tapo C200 v5 contains a stack-based buffer overflow flaw in RTSP authentication handling due to improper validation of Authorization header field lengths, which can be triggered by a crafted authentication request.\n\nSuccessful exploitation causes the affected RTSP core service process to crash and triggers an automatic system reboot, resulting in a denial of service (DoS) condition.  This prevents legitimate users from accessing the camera’s live video stream or management interface until the service restarts.","severity":{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00305,"percentile":0.2347,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-06-02T16:13:36Z","modified":"2026-07-22T19:10:00Z","products":[{"vendor":"tp-link","product":"tapo_c200_firmware"},{"vendor":"tp-link systems inc.","product":"tapo c200 v5"}],"references":[{"url":"https://www.tp-link.com/us/support/download/tapo-c200/v5/#Firmware-Release-Notes","tags":["patch","Release Notes"]},{"url":"https://www.tp-link.com/en/support/download/tapo-c200/v5/#Firmware-Release-Notes","tags":["patch","Release Notes"]},{"url":"https://www.tp-link.com/kr/support/download/tapo-c200/#Firmware-Release-Notes","tags":["patch","Release Notes"]},{"url":"https://www.tp-link.com/us/support/faq/5113/","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1871"},{"url":"https://www.tp-link.com/us/support/faq/5113"},{"url":"https://github.com/advisories/GHSA-92jw-rf4g-rwr2"}],"sources":{"cve":[{"id":"CVE-2026-1871","title":"Authenticated Stack-based Buffer Overflow in RTSP Authentication of Tapo C200","description":"TP-Link Tapo C200 v5 contains a stack-based buffer overflow flaw in RTSP authentication handling due to improper validation of Authorization header field lengths, which can be triggered by a crafted authentication request.\n\nSuccessful exploitation causes the affected RTSP core service process to crash and triggers an automatic system reboot, resulting in a denial of service (DoS) condition.  This prevents legitimate users from accessing the camera’s live video stream or management interface until the service restarts.","status":"published","published":"2026-06-02T16:13:36.64Z","modified":"2026-06-02T18:24:54.391Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:20:01.271368Z"}],"euvd":[{"id":"EUVD-2026-33978","description":"TP-Link Tapo C200 v5 contains a stack-based buffer overflow flaw in RTSP authentication handling due to improper validation of Authorization header field lengths, which can be triggered by a crafted authentication request.\n\nSuccessful exploitation causes the affected RTSP core service process to crash and triggers an automatic system reboot, resulting in a denial of service (DoS) condition.  This prevents legitimate users from accessing the camera’s live video stream or management interface until the service restarts.","status":"published","published":"2026-06-02T16:13:36Z","modified":"2026-06-02T18:24:54Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:20:55.651138Z"}],"ghsa":[{"id":"GHSA-92jw-rf4g-rwr2","title":"TP-Link Tapo C200 v5 contains a stack-based buffer overflow flaw in RTSP authentication handling...","description":"TP-Link Tapo C200 v5 contains a stack-based buffer overflow flaw in RTSP authentication handling due to improper validation of Authorization header field lengths, which can be triggered by a crafted authentication request.\n\nSuccessful exploitation causes the affected RTSP core service process to crash and triggers an automatic system reboot, resulting in a denial of service (DoS) condition.  This prevents legitimate users from accessing the camera’s live video stream or management interface until the service restarts.","status":"published","published":"2026-06-02T18:31:33Z","modified":"2026-06-04T18:31:29Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:08:33.048787Z"}],"nvd":[{"id":"CVE-2026-1871","description":"TP-Link Tapo C200 v5 contains a stack-based buffer overflow flaw in RTSP authentication handling due to improper validation of Authorization header field lengths, which can be triggered by a crafted authentication request.\n\nSuccessful exploitation causes the affected RTSP core service process to crash and triggers an automatic system reboot, resulting in a denial of service (DoS) condition.  This prevents legitimate users from accessing the camera’s live video stream or management interface until the service restarts.","status":"published","published":"2026-06-02T17:16:26.967Z","modified":"2026-07-22T19:10:00.12Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:12:22.022466Z"}]}}