{"id":"CVE-2025-66635","aliases":["EUVD-2025-203525","GHSA-3xxw-5cqg-mq5w"],"status":"published","title":"Stack-based buffer overflow vulnerability exists in SEIKO EPSON Web Config. Specially crafted...","description":"Stack-based buffer overflow vulnerability exists in SEIKO EPSON Web Config. Specially crafted data input by a logged-in user may execute arbitrary code. As for the details of the affected products and versions, see the information provided by the vendor under [References].","severity":{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00534,"percentile":0.45325,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2025-12-16T06:59:25Z","modified":"2026-10-07T19:10:00Z","products":[{"vendor":"seiko epson corporation","product":"web config"}],"references":[{"url":"https://www.epson.jp/support/misc_t/251216_oshirase.htm"},{"url":"https://epson.com/Support/wa00971"},{"url":"https://jvn.jp/en/jp/JVN51846148/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66635"},{"url":"https://jvn.jp/en/jp/JVN51846148"},{"url":"https://github.com/advisories/GHSA-3xxw-5cqg-mq5w"}],"sources":{"cve":[{"id":"CVE-2025-66635","description":"Stack-based buffer overflow vulnerability exists in SEIKO EPSON Web Config. Specially crafted data input by a logged-in user may execute arbitrary code. As for the details of the affected products and versions, see the information provided by the vendor under [References].","status":"published","published":"2025-12-16T06:59:25.611Z","modified":"2025-12-22T02:27:45.711Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.0","score":7.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:32:53.157279Z"}],"euvd":[{"id":"EUVD-2025-203525","description":"Stack-based buffer overflow vulnerability exists in SEIKO EPSON Web Config. Specially crafted data input by a logged-in user may execute arbitrary code. As for the details of the affected products and versions, see the information provided by the vendor under [References].","status":"published","published":"2025-12-16T06:59:25Z","modified":"2025-12-22T02:27:45Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T19:49:02.188903Z"}],"ghsa":[{"id":"GHSA-3xxw-5cqg-mq5w","title":"Stack-based buffer overflow vulnerability exists in SEIKO EPSON Web Config. Specially crafted...","description":"Stack-based buffer overflow vulnerability exists in SEIKO EPSON Web Config. Specially crafted data input by a logged-in user may execute arbitrary code. As for the details of the affected products and versions, see the information provided by the vendor under [References].","status":"published","published":"2025-12-16T09:31:07Z","modified":"2025-12-22T03:31:19Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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":"high"},{"version":"3.0","score":7.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:05:18.702066Z"}],"nvd":[{"id":"CVE-2025-66635","description":"Stack-based buffer overflow vulnerability exists in SEIKO EPSON Web Config. Specially crafted data input by a logged-in user may execute arbitrary code. As for the details of the affected products and versions, see the information provided by the vendor under [References].","status":"published","published":"2025-12-16T07:15:54.48Z","modified":"2026-10-07T19:10:00.16Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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":"high","assessor":"secondary"},{"version":"3.0","score":7.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:11:50.400521Z"}]}}