{"id":"CVE-2026-116501","aliases":["EUVD-2026-119683"],"status":"published","title":"Qiskit SDK C API may trigger an out of bounds write on accessing the unitary matrix with qk_circuit_inst_unitary().","description":"IBM Qiskit SDK 2.4.0 through 2.6.1 could allow a local attacker to execute arbitrary code due to an out-of-bounds write caused by improper input validation when accessing a corrupted unitary matrix.","severity":{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00166,"percentile":0.05894,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2026-11-08T17:05:18Z","modified":"2026-11-08T17:05:18Z","products":[{"vendor":"ibm","product":"qiskit sdk"}],"references":[{"url":"https://www.ibm.com/support/pages/node/7295237","tags":["vendor-advisory","patch"]}],"sources":{"cve":[{"id":"CVE-2026-116501","title":"Qiskit SDK C API may trigger an out of bounds write on accessing the unitary matrix with qk_circuit_inst_unitary().","description":"IBM Qiskit SDK 2.4.0 through 2.6.1 could allow a local attacker to execute arbitrary code due to an out-of-bounds write caused by improper input validation when accessing a corrupted unitary matrix.","status":"published","published":"2026-11-08T17:05:18.09Z","modified":"2026-11-10T04:56:06.793Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-787"],"updated_at":"2026-11-08T18:44:07.937542Z"}],"euvd":[{"id":"EUVD-2026-119683","description":"IBM Qiskit SDK 2.4.0 through 2.6.1 could allow a local attacker to execute arbitrary code due to an out-of-bounds write caused by improper input validation when accessing a corrupted unitary matrix.","status":"published","published":"2026-11-08T17:05:18Z","modified":"2026-11-10T04:56:06Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-08T18:13:35.788806Z"}],"nvd":[{"id":"CVE-2026-116501","description":"IBM Qiskit SDK 2.4.0 through 2.6.1 could allow a local attacker to execute arbitrary code due to an out-of-bounds write caused by improper input validation when accessing a corrupted unitary matrix.","status":"published","published":"2026-11-08T17:16:37.143Z","modified":"2026-11-10T05:17:57.56Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-09T07:12:50.724145Z"}]}}