{"id":"CVE-2021-32457","aliases":["EUVD-2021-19311","GHSA-gc5v-4mhp-vqp4"],"status":"published","title":"A privilege escalation vulnerability exists in the tdts.ko chrdev_ioctl_handle functionality of...","description":"Trend Micro Home Network Security version 6.6.604 and earlier is vulnerable to an iotcl stack-based buffer overflow vulnerability which could allow an attacker to issue a specially crafted iotcl to escalate privileges on affected devices. An attacker must first obtain the ability to execute low-privileged code on the target device in order to exploit this vulnerability.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00511,"percentile":0.44056,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269","CWE-787"],"published":"2021-05-26T13:45:17Z","modified":"2026-06-17T03:52:58Z","products":[{"vendor":"trend micro","product":"trend micro home network security"},{"vendor":"trendmicro","product":"home_network_security"}],"references":[{"url":"https://helpcenter.trendmicro.com/en-us/article/TMKA-10337","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1230","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32457"},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1230"},{"url":"https://github.com/advisories/GHSA-gc5v-4mhp-vqp4"}],"sources":{"cve":[{"id":"CVE-2021-32457","description":"Trend Micro Home Network Security version 6.6.604 and earlier is vulnerable to an iotcl stack-based buffer overflow vulnerability which could allow an attacker to issue a specially crafted iotcl to escalate privileges on affected devices. An attacker must first obtain the ability to execute low-privileged code on the target device in order to exploit this vulnerability.","status":"published","published":"2021-05-26T13:45:17Z","modified":"2024-08-03T23:17:29.504Z","updated_at":"2026-11-02T14:33:07.014772Z"}],"euvd":[{"id":"EUVD-2021-19311","description":"Trend Micro Home Network Security version 6.6.604 and earlier is vulnerable to an iotcl stack-based buffer overflow vulnerability which could allow an attacker to issue a specially crafted iotcl to escalate privileges on affected devices. An attacker must first obtain the ability to execute low-privileged code on the target device in order to exploit this vulnerability.","status":"published","published":"2021-05-26T13:45:17Z","modified":"2024-08-03T23:17:29Z","updated_at":"2026-11-03T03:24:36.852603Z"}],"ghsa":[{"id":"GHSA-gc5v-4mhp-vqp4","title":"A privilege escalation vulnerability exists in the tdts.ko chrdev_ioctl_handle functionality of...","description":"A privilege escalation vulnerability exists in the tdts.ko chrdev_ioctl_handle functionality of Trend Micro, Inc. Home Network Security 6.1.567. A specially crafted ioctl can lead to increased privileges. An attacker can issue an ioctl to trigger this vulnerability.","status":"published","published":"2022-05-24T19:03:21Z","modified":"2023-01-29T05:06:47Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-269","CWE-787"],"updated_at":"2026-11-02T14:46:05.929333Z"}],"nvd":[{"id":"CVE-2021-32457","description":"Trend Micro Home Network Security version 6.6.604 and earlier is vulnerable to an iotcl stack-based buffer overflow vulnerability which could allow an attacker to issue a specially crafted iotcl to escalate privileges on affected devices. An attacker must first obtain the ability to execute low-privileged code on the target device in order to exploit this vulnerability.","status":"published","published":"2021-05-26T14:15:08.773Z","modified":"2026-06-17T03:52:58.797Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:53.987491Z"}]}}