{"id":"CVE-2021-32968","aliases":["EUVD-2021-19689","GHSA-hmp7-5xvh-34hr"],"status":"published","title":"Moxa NPort IAW5000A-I/O Series Serial Device Server Classic Buffer Overflow","description":"Two buffer overflows in the built-in web server in Moxa NPort IAW5000A-I/O Series firmware version 2.2 or earlier may allow a remote attacker to cause a denial-of-service condition.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01703,"percentile":0.77445,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2022-04-01T22:17:12Z","modified":"2026-06-17T03:53:53Z","products":[{"vendor":"moxa","product":"nport iaw5000a-i/o series firmware"},{"vendor":"moxa","product":"nport_iaw5150a-12i\\/o_firmware"},{"vendor":"moxa","product":"nport_iaw5150a-6i\\/o_firmware"},{"vendor":"moxa","product":"nport_iaw5250a-12i\\/o_firmware"},{"vendor":"moxa","product":"nport_iaw5250a-6i\\/o_firmware"}],"references":[{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-187-01","tags":["x_refsource_CONFIRM","x_transferred","Mitigation","Third Party Advisory","US Government Resource"]},{"url":"https://www.moxa.com/en/support/product-support/security-advisory/nport-iaw5000a-io-serial-device-server-vulnerabilities","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32968"},{"url":"https://github.com/advisories/GHSA-hmp7-5xvh-34hr"}],"sources":{"cve":[{"id":"CVE-2021-32968","title":"Moxa NPort IAW5000A-I/O Series Serial Device Server Classic Buffer Overflow","description":"Two buffer overflows in the built-in web server in Moxa NPort IAW5000A-I/O Series firmware version 2.2 or earlier may allow a remote attacker to cause a denial-of-service condition.","status":"published","published":"2022-04-01T22:17:12Z","modified":"2025-04-16T16:33:42.959Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:33:07.014772Z"}],"euvd":[{"id":"EUVD-2021-19689","description":"Two buffer overflows in the built-in web server in Moxa NPort IAW5000A-I/O Series firmware version 2.2 or earlier may allow a remote attacker to cause a denial-of-service condition.","status":"published","published":"2022-04-01T22:17:12Z","modified":"2025-04-16T16:33:42Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:23.922531Z"}],"ghsa":[{"id":"GHSA-hmp7-5xvh-34hr","title":"Two buffer overflows in the built-in web server in Moxa NPort IAW5000A-I/O Series firmware...","description":"Two buffer overflows in the built-in web server in Moxa NPort IAW5000A-I/O Series firmware version 2.2 or earlier may allow a remote attacker to cause a denial-of-service condition.","status":"published","published":"2022-04-03T00:01:02Z","modified":"2023-01-27T05:01:16Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:41:51.63425Z"}],"nvd":[{"id":"CVE-2021-32968","description":"Two buffer overflows in the built-in web server in Moxa NPort IAW5000A-I/O Series firmware version 2.2 or earlier may allow a remote attacker to cause a denial-of-service condition.","status":"published","published":"2022-04-01T23:15:09.92Z","modified":"2026-06-17T03:53:53.59Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:07:05.581807Z"}]}}