{"id":"CVE-2021-42012","aliases":["EUVD-2021-29000","GHSA-m654-qf29-wq6w"],"status":"published","title":"A stack-based buffer overflow vulnerability in Trend Micro Apex One, Apex One as a Service and...","description":"A stack-based buffer overflow vulnerability in Trend Micro Apex One, Apex One as a Service and Worry-Free Business Security 10.0 SP1 could allow a local attacker to escalate privileges on affected installations. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system 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":"2026-11-07","score":0.00578,"percentile":0.47859,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2021-10-21T07:46:03Z","modified":"2026-06-17T04:09:09Z","products":[{"vendor":"trend micro","product":"trend micro apex one"},{"vendor":"trend micro","product":"trend micro worry-free business security"},{"vendor":"trend micro, inc.","product":"trend micro worry-free business security"},{"vendor":"trendmicro","product":"apex_one"},{"vendor":"trendmicro","product":"worry-free_business_security"},{"vendor":"trendmicro","product":"worry-free_business_security_services"}],"references":[{"url":"https://success.trendmicro.com/solution/000289229","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://success.trendmicro.com/solution/000289230","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-1221/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-42012"},{"url":"https://github.com/advisories/GHSA-m654-qf29-wq6w"}],"sources":{"cve":[{"id":"CVE-2021-42012","description":"A stack-based buffer overflow vulnerability in Trend Micro Apex One, Apex One as a Service and Worry-Free Business Security 10.0 SP1 could allow a local attacker to escalate privileges on affected installations. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.","status":"published","published":"2021-10-21T07:46:03Z","modified":"2024-08-04T03:22:25.638Z","updated_at":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-29000","description":"A stack-based buffer overflow vulnerability in Trend Micro Apex One, Apex One as a Service and Worry-Free Business Security 10.0 SP1 could allow a local attacker to escalate privileges on affected installations. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.","status":"published","published":"2021-10-21T07:46:03Z","modified":"2024-08-04T03:22:25Z","updated_at":"2026-11-03T03:24:16.784119Z"}],"ghsa":[{"id":"GHSA-m654-qf29-wq6w","title":"A stack-based buffer overflow vulnerability in Trend Micro Apex One, Apex One as a Service and...","description":"A stack-based buffer overflow vulnerability in Trend Micro Apex One, Apex One as a Service and Worry-Free Business Security 10.0 SP1 could allow a local attacker to escalate privileges on affected installations. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.","status":"published","published":"2022-05-24T19:18:29Z","modified":"2023-01-30T05:02:58Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:46:44.594683Z"}],"nvd":[{"id":"CVE-2021-42012","description":"A stack-based buffer overflow vulnerability in Trend Micro Apex One, Apex One as a Service and Worry-Free Business Security 10.0 SP1 could allow a local attacker to escalate privileges on affected installations. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.","status":"published","published":"2021-10-21T08:15:07.297Z","modified":"2026-06-17T04:09:09.09Z","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":"2026-11-02T14:07:00.137719Z"}]}}