{"id":"CVE-2026-9105","aliases":["EUVD-2026-40136","GHSA-whjh-xgqc-hvvf"],"status":"published","title":"Authenticated Stack-Based Buffer Overflow in TP-Link TL-WR841N Web Interface","description":"An authenticated stack-based buffer overflow vulnerability exists in the web management interface of TP-Link TL-WR841N v14.  A remote authenticated attacker can send crafted HTTP requests to cause the embedded web server to overflow a stack buffer, resulting in a crash of the affected process.\n\nSuccessful exploitation results in a denial-of-service condition, causing the device to crash and automatically reboot.","severity":{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.01118,"percentile":0.66329,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121","CWE-787"],"published":"2026-06-29T16:05:33Z","modified":"2026-10-25T21:10:00Z","products":[{"vendor":"tp-link","product":"tl-wr841n_firmware"},{"vendor":"tp-link systems inc.","product":"tl-wr841n v14"}],"references":[{"url":"https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmware","tags":["patch","Product"]},{"url":"https://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmware","tags":["patch","Product"]},{"url":"https://www.tp-link.com/us/support/faq/5152/","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-9105"},{"url":"https://www.tp-link.com/us/support/faq/5152"},{"url":"https://github.com/advisories/GHSA-whjh-xgqc-hvvf"}],"sources":{"cve":[{"id":"CVE-2026-9105","title":"Authenticated Stack-Based Buffer Overflow in TP-Link TL-WR841N Web Interface","description":"An authenticated stack-based buffer overflow vulnerability exists in the web management interface of TP-Link TL-WR841N v14.  A remote authenticated attacker can send crafted HTTP requests to cause the embedded web server to overflow a stack buffer, resulting in a crash of the affected process.\n\nSuccessful exploitation results in a denial-of-service condition, causing the device to crash and automatically reboot.","status":"published","published":"2026-06-29T16:05:33.521Z","modified":"2026-06-29T16:18:26.269Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T13:42:26.790871Z"}],"euvd":[{"id":"EUVD-2026-40136","description":"An authenticated stack-based buffer overflow vulnerability exists in the web management interface of TP-Link TL-WR841N v14.  A remote authenticated attacker can send crafted HTTP requests to cause the embedded web server to overflow a stack buffer, resulting in a crash of the affected process.\n\nSuccessful exploitation results in a denial-of-service condition, causing the device to crash and automatically reboot.","status":"published","published":"2026-06-29T16:05:33Z","modified":"2026-06-29T16:18:26Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:20:22.506413Z"}],"ghsa":[{"id":"GHSA-whjh-xgqc-hvvf","title":"An authenticated stack-based buffer overflow vulnerability exists in the web management interface...","description":"An authenticated stack-based buffer overflow vulnerability exists in the web management interface of TP-Link TL-WR841N v14.  A remote authenticated attacker can send crafted HTTP requests to cause the embedded web server to overflow a stack buffer, resulting in a crash of the affected process.\n\nSuccessful exploitation results in a denial-of-service condition, causing the device to crash and automatically reboot.","status":"published","published":"2026-06-29T18:31:54Z","modified":"2026-07-01T21:36:56Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:H/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":"medium"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-121","CWE-787"],"updated_at":"2026-11-02T15:09:10.245383Z"}],"nvd":[{"id":"CVE-2026-9105","description":"An authenticated stack-based buffer overflow vulnerability exists in the web management interface of TP-Link TL-WR841N v14.  A remote authenticated attacker can send crafted HTTP requests to cause the embedded web server to overflow a stack buffer, resulting in a crash of the affected process.\n\nSuccessful exploitation results in a denial-of-service condition, causing the device to crash and automatically reboot.","status":"published","published":"2026-06-29T16:16:44.98Z","modified":"2026-10-25T21:10:00.77Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:H/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":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-121","CWE-787"],"updated_at":"2026-11-02T14:12:26.508751Z"}]}}