{"id":"CVE-2025-15387","aliases":["EUVD-2025-205903","GHSA-vvhf-47gr-69vm"],"status":"published","title":"QNO Technology｜VPN Firewall - Insufficient Entropy","description":"VPN Firewall developed by QNO Technology has a Insufficient Entropy vulnerability, allowing unauthenticated remote attackers to obtain any logged-in user session through brute-force attacks and subsequently log into the system.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00367,"percentile":0.30823,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-331"],"published":"2025-12-31T08:23:59Z","modified":"2026-06-17T08:37:40Z","products":[{"vendor":"qno technology","product":"vpn firewall"}],"references":[{"url":"https://www.twcert.org.tw/tw/cp-132-10613-e1780-1.html","tags":["third-party-advisory"]},{"url":"https://www.twcert.org.tw/en/cp-139-10614-dee41-2.html","tags":["third-party-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-15387"},{"url":"https://github.com/advisories/GHSA-vvhf-47gr-69vm"}],"sources":{"cve":[{"id":"CVE-2025-15387","title":"QNO Technology｜VPN Firewall - Insufficient Entropy","description":"VPN Firewall developed by QNO Technology has a Insufficient Entropy vulnerability, allowing unauthenticated remote attackers to obtain any logged-in user session through brute-force attacks and subsequently log into the system.","status":"published","published":"2025-12-31T08:23:59.879Z","modified":"2025-12-31T16:05:44.37Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-331"],"updated_at":"2026-11-02T14:32:37.680845Z"}],"euvd":[{"id":"EUVD-2025-205903","description":"VPN Firewall developed by QNO Technology has a Insufficient Entropy vulnerability, allowing unauthenticated remote attackers to obtain any logged-in user session through brute-force attacks and subsequently log into the system.","status":"published","published":"2025-12-31T08:23:59Z","modified":"2025-12-31T16:05:44Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T19:48:59.455836Z"}],"ghsa":[{"id":"GHSA-vvhf-47gr-69vm","title":"VPN Firewall developed by QNO Technology has a Insufficient Entropy vulnerability, allowing...","description":"VPN Firewall developed by QNO Technology has a Insufficient Entropy vulnerability, allowing unauthenticated remote attackers to obtain any logged-in user session through brute-force attacks and subsequently log into the system.","status":"published","published":"2025-12-31T09:30:19Z","modified":"2025-12-31T09:31:37Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-331"],"updated_at":"2026-11-02T15:05:24.798125Z"}],"nvd":[{"id":"CVE-2025-15387","description":"VPN Firewall developed by QNO Technology has a Insufficient Entropy vulnerability, allowing unauthenticated remote attackers to obtain any logged-in user session through brute-force attacks and subsequently log into the system.","status":"published","published":"2025-12-31T09:15:49.68Z","modified":"2026-06-17T08:37:40.28Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-331"],"updated_at":"2026-11-02T14:11:54.323368Z"}]}}