{"id":"CVE-2026-12855","aliases":["EUVD-2026-74615","GHSA-w7c8-hp3q-qpv8"],"status":"published","title":"H19WMIHandlerSmm: unvalidated memory boundary could result in arbitrary code execution.","description":"Unvalidated memory boundary could result in arbitrary code execution. The vulnerability exists in the code developed specifically for HP projects.","severity":{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00184,"percentile":0.08061,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2026-09-09T03:59:11Z","modified":"2026-10-01T18:33:42Z","products":[{"vendor":"insyde software","product":"insydeh2o"}],"references":[{"url":"https://www.insyde.com/security-pledge/sa-2026009/"},{"url":"https://www.kb.cert.org/vuls/id/553437"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-12855"},{"url":"https://www.insyde.com/security-pledge/sa-2026009"},{"url":"https://github.com/advisories/GHSA-w7c8-hp3q-qpv8"}],"sources":{"cve":[{"id":"CVE-2026-12855","title":"H19WMIHandlerSmm: unvalidated memory boundary could result in arbitrary code execution.","description":"Unvalidated memory boundary could result in arbitrary code execution. The vulnerability exists in the code developed specifically for HP projects.","status":"published","published":"2026-09-09T03:59:11.348Z","modified":"2026-10-01T15:08:22.356Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:19:48.461833Z"}],"euvd":[{"id":"EUVD-2026-74615","description":"Unvalidated memory boundary could result in arbitrary code execution. The vulnerability exists in the code developed specifically for HP projects.","status":"published","published":"2026-09-09T03:59:11Z","modified":"2026-10-01T15:08:22Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T17:27:45.695512Z"}],"ghsa":[{"id":"GHSA-w7c8-hp3q-qpv8","title":"Unvalidated memory boundary could result in arbitrary code execution. The vulnerability exists in...","description":"Unvalidated memory boundary could result in arbitrary code execution. The vulnerability exists in the code developed specifically for HP projects.","status":"published","published":"2026-09-09T06:31:36Z","modified":"2026-10-01T18:33:42Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:12:41.196374Z"}],"nvd":[{"id":"CVE-2026-12855","description":"Unvalidated memory boundary could result in arbitrary code execution. The vulnerability exists in the code developed specifically for HP projects.","status":"published","published":"2026-09-09T04:17:56.48Z","modified":"2026-10-01T16:17:40.63Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:12:45.612639Z"}]}}