{"id":"CVE-2026-20797","aliases":["EUVD-2026-8972","GHSA-rgf4-44r9-4r27"],"status":"published","title":"Copeland XWEB and XWEB Pro Stack-based Buffer Overflow","description":"A stack based buffer overflow exists in an API route of XWEB Pro version\n 1.12.1 and prior, enabling unauthenticated attackers to cause stack \ncorruption and a termination of the program.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00825,"percentile":0.57723,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121","CWE-787"],"published":"2026-02-27T01:03:18Z","modified":"2026-06-17T10:17:48Z","products":[{"vendor":"copeland","product":"copeland xweb 300d pro"},{"vendor":"copeland","product":"copeland xweb 500b pro"},{"vendor":"copeland","product":"copeland xweb 500d pro"},{"vendor":"copeland","product":"xweb_300d_pro_firmware"},{"vendor":"copeland","product":"xweb_500b_pro_firmware"},{"vendor":"copeland","product":"xweb_500d_pro_firmware"}],"references":[{"url":"https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate","tags":["Product"]},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-10.json","tags":["Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20797"},{"url":"https://github.com/advisories/GHSA-rgf4-44r9-4r27"}],"sources":{"cve":[{"id":"CVE-2026-20797","title":"Copeland XWEB and XWEB Pro Stack-based Buffer Overflow","description":"A stack based buffer overflow exists in an API route of XWEB Pro version\n 1.12.1 and prior, enabling unauthenticated attackers to cause stack \ncorruption and a termination of the program.","status":"published","published":"2026-02-27T01:03:18.783Z","modified":"2026-05-10T13:30:10.603Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T13:35:44.571002Z"}],"euvd":[{"id":"EUVD-2026-8972","description":"A stack based buffer overflow exists in an API route of XWEB Pro version\n 1.12.1 and prior, enabling unauthenticated attackers to cause stack \ncorruption and a termination of the program.","status":"published","published":"2026-02-27T01:03:18Z","modified":"2026-05-10T13:30:10Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T19:05:13.690762Z"}],"ghsa":[{"id":"GHSA-rgf4-44r9-4r27","title":"A stack based buffer overflow exists in an API route of XWEB Pro version\n 1.12.1 and prior,...","description":"A stack based buffer overflow exists in an API route of XWEB Pro version\n 1.12.1 and prior, enabling unauthenticated attackers to cause stack \ncorruption and a termination of the program.","status":"published","published":"2026-02-27T03:30:27Z","modified":"2026-05-10T15:31:16Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-121","CWE-787"],"updated_at":"2026-11-02T15:07:58.197878Z"}],"nvd":[{"id":"CVE-2026-20797","description":"A stack based buffer overflow exists in an API route of XWEB Pro version\n 1.12.1 and prior, enabling unauthenticated attackers to cause stack \ncorruption and a termination of the program.","status":"published","published":"2026-02-27T02:16:18.343Z","modified":"2026-06-17T10:17:48.1Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","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":"primary"}],"cwes":["CWE-787","CWE-121"],"updated_at":"2026-11-02T14:12:07.027269Z"}]}}