{"id":"CVE-2026-34118","aliases":["EUVD-2026-18426","GHSA-v6p2-mjh5-mvpm"],"status":"published","title":"Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in multiple TP-Link Tapo Cameras","description":"A heap-based buffer overflow vulnerability was identified in multiple TP-Link Tapo cameras in the HTTP POST body parsing logic due to missing validation of remaining buffer capacity after dynamic allocation, due to insufficient boundary validation when handling externally supplied HTTP input.  \n\nAn attacker\non the same network segment could trigger heap memory corruption conditions by\nsending crafted payloads that cause write operations beyond allocated buffer\nboundaries.  Successful exploitation\ncauses a Denial-of-Service (DoS) condition, causing the device’s process to\ncrash or become unresponsive.","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":"2026-11-11","score":0.00452,"percentile":0.39676,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-04-02T17:19:43Z","modified":"2026-11-02T18:31:54Z","products":[{"vendor":"tp link systems inc.","product":"tapo c100 v5"},{"vendor":"tp link systems inc.","product":"tapo c101 v5"},{"vendor":"tp link systems inc.","product":"tapo c200 v3"},{"vendor":"tp link systems inc.","product":"tapo c210 v3"},{"vendor":"tp link systems inc.","product":"tapo tc70 v3"},{"vendor":"tp-link","product":"tapo_c520ws_firmware"},{"vendor":"tp-link systems inc.","product":"tapo c100 v5"},{"vendor":"tp-link systems inc.","product":"tapo c101 v5"},{"vendor":"tp-link systems inc.","product":"tapo c200 v3"},{"vendor":"tp-link systems inc.","product":"tapo c520ws v2.6"}],"references":[{"url":"https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes","tags":["patch","Release Notes"]},{"url":"https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes","tags":["patch","Release Notes"]},{"url":"https://www.tp-link.com/us/support/faq/5047/","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://www.tp-link.com/us/support/download/tapo-c100/v5/#Firmware-Release-Notes","tags":["patch"]},{"url":"https://www.tp-link.com/en/support/download/tapo-c100/v5/#Firmware-Release-Notes","tags":["patch"]},{"url":"https://www.tp-link.com/us/support/download/tapo-c101/v5/#Firmware-Release-Notes","tags":["patch"]},{"url":"https://www.tp-link.com/us/support/download/tapo-c210/v3.60/#Firmware-Release-Notes","tags":["patch"]},{"url":"https://www.tp-link.com/en/support/download/tc70/v3/#Firmware-Release-Notes","tags":["patch"]},{"url":"https://www.tp-link.com/en/support/download/tapo-c200/v3/#Firmware-Release-Notes","tags":["patch"]},{"url":"https://www.tp-link.com/us/support/download/tapo-c200/v3/#Firmware-Release-Notes","tags":["patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34118"},{"url":"https://www.tp-link.com/us/support/faq/5047"},{"url":"https://github.com/advisories/GHSA-v6p2-mjh5-mvpm"}],"sources":{"cve":[{"id":"CVE-2026-34118","title":"Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in multiple TP-Link Tapo Cameras","description":"A heap-based buffer overflow vulnerability was identified in multiple TP-Link Tapo cameras in the HTTP POST body parsing logic due to missing validation of remaining buffer capacity after dynamic allocation, due to insufficient boundary validation when handling externally supplied HTTP input.  \n\nAn attacker\non the same network segment could trigger heap memory corruption conditions by\nsending crafted payloads that cause write operations beyond allocated buffer\nboundaries.  Successful exploitation\ncauses a Denial-of-Service (DoS) condition, causing the device’s process to\ncrash or become unresponsive.","status":"published","published":"2026-04-02T17:19:43.453Z","modified":"2026-11-02T17:47:11.944Z","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-122"],"updated_at":"2026-11-02T19:02:29.283836Z"}],"euvd":[{"id":"EUVD-2026-18426","description":"A heap-based buffer overflow vulnerability was identified in multiple TP-Link Tapo cameras in the HTTP POST body parsing logic due to missing validation of remaining buffer capacity after dynamic allocation, due to insufficient boundary validation when handling externally supplied HTTP input.  \n\nAn attacker\non the same network segment could trigger heap memory corruption conditions by\nsending crafted payloads that cause write operations beyond allocated buffer\nboundaries.  Successful exploitation\ncauses a Denial-of-Service (DoS) condition, causing the device’s process to\ncrash or become unresponsive.","status":"published","published":"2026-04-02T17:19:43Z","modified":"2026-11-02T17:47:11Z","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":"2026-11-03T05:08:39.228431Z"}],"ghsa":[{"id":"GHSA-v6p2-mjh5-mvpm","title":"A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 in the HTTP...","description":"A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 in the HTTP POST body parsing logic due to missing validation of remaining buffer capacity after dynamic allocation, due to insufficient boundary validation when handling externally supplied HTTP input.  An attacker\non the same network segment could trigger heap memory corruption conditions by\nsending crafted payloads that cause write operations beyond allocated buffer\nboundaries.  Successful exploitation\ncauses a Denial-of-Service (DoS) condition, causing the device’s process to\ncrash or become unresponsive.","status":"published","published":"2026-04-02T18:31:38Z","modified":"2026-11-02T18:31:54Z","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/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-122"],"updated_at":"2026-11-02T19:02:39.544035Z"}],"nvd":[{"id":"CVE-2026-34118","description":"A heap-based buffer overflow vulnerability was identified in multiple TP-Link Tapo cameras in the HTTP POST body parsing logic due to missing validation of remaining buffer capacity after dynamic allocation, due to insufficient boundary validation when handling externally supplied HTTP input.  \n\nAn attacker\non the same network segment could trigger heap memory corruption conditions by\nsending crafted payloads that cause write operations beyond allocated buffer\nboundaries.  Successful exploitation\ncauses a Denial-of-Service (DoS) condition, causing the device’s process to\ncrash or become unresponsive.","status":"published","published":"2026-04-02T18:16:28.503Z","modified":"2026-11-02T18:18:54.91Z","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-122"],"updated_at":"2026-11-02T20:51:30.482449Z"}]}}