{"id":"CVE-2026-76179","aliases":["EUVD-2026-67283","GHSA-62mm-rmvp-f5p7"],"status":"published","title":"Ebyte NA111-M Use of GET Request Method With Sensitive Query Strings","description":"An improper protection of authentication tokens vulnerability exists in \ncertain Ebyte gateway products. Authentication tokens used by the web \nmanagement interface are insufficiently protected during client-side \nsession handling, which may allow an attacker with access to exposed \nsession information to obtain and reuse a valid token. Successful \nexploitation could allow an attacker to impersonate an authenticated \nuser and gain unauthorized access to device management functionality.","severity":{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00652,"percentile":0.5169,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-598"],"published":"2026-08-27T21:22:53Z","modified":"2026-10-05T19:21:04Z","products":[{"vendor":"ebyte","product":"ebyte na111-m firmware"}],"references":[{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-237-06"},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-237-06.json"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-76179"},{"url":"https://github.com/advisories/GHSA-62mm-rmvp-f5p7"}],"sources":{"cve":[{"id":"CVE-2026-76179","title":"Ebyte NA111-M Use of GET Request Method With Sensitive Query Strings","description":"An improper protection of authentication tokens vulnerability exists in \ncertain Ebyte gateway products. Authentication tokens used by the web \nmanagement interface are insufficiently protected during client-side \nsession handling, which may allow an attacker with access to exposed \nsession information to obtain and reuse a valid token. Successful \nexploitation could allow an attacker to impersonate an authenticated \nuser and gain unauthorized access to device management functionality.","status":"published","published":"2026-08-27T21:22:53.6Z","modified":"2026-10-05T19:21:04.676Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-598"],"updated_at":"2026-11-02T13:46:32.755125Z"}],"euvd":[{"id":"EUVD-2026-67283","description":"An improper protection of authentication tokens vulnerability exists in \ncertain Ebyte gateway products. Authentication tokens used by the web \nmanagement interface are insufficiently protected during client-side \nsession handling, which may allow an attacker with access to exposed \nsession information to obtain and reuse a valid token. Successful \nexploitation could allow an attacker to impersonate an authenticated \nuser and gain unauthorized access to device management functionality.","status":"published","published":"2026-08-27T21:22:53Z","modified":"2026-10-05T19:21:04Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T17:27:39.05741Z"}],"ghsa":[{"id":"GHSA-62mm-rmvp-f5p7","title":"An improper protection of authentication tokens vulnerability exists in \ncertain Ebyte gateway...","description":"An improper protection of authentication tokens vulnerability exists in \ncertain Ebyte gateway products. Authentication tokens used by the web \nmanagement interface are insufficiently protected during client-side \nsession handling, which may allow an attacker with access to exposed \nsession information to obtain and reuse a valid token. Successful \nexploitation could allow an attacker to impersonate an authenticated \nuser and gain unauthorized access to device management functionality.","status":"published","published":"2026-08-28T00:32:04Z","modified":"2026-08-28T00:32:11Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/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":"critical"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-598"],"updated_at":"2026-11-02T15:11:06.356167Z"}],"nvd":[{"id":"CVE-2026-76179","description":"An improper protection of authentication tokens vulnerability exists in \ncertain Ebyte gateway products. Authentication tokens used by the web \nmanagement interface are insufficiently protected during client-side \nsession handling, which may allow an attacker with access to exposed \nsession information to obtain and reuse a valid token. Successful \nexploitation could allow an attacker to impersonate an authenticated \nuser and gain unauthorized access to device management functionality.","status":"published","published":"2026-08-28T00:18:14.43Z","modified":"2026-08-31T19:18:40.503Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/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":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-598"],"updated_at":"2026-11-02T14:12:42.035353Z"}]}}