{"id":"CVE-2026-4870","aliases":["EUVD-2026-36575"],"status":"published","title":"Qiskit SDK is vulnerable to specific functions may recurse too deeply and overflow the available stack space, when encountering certain classical expressions.","description":"IBM Qiskit SDK 0.43.0 through 2.5.0 could allow an attacker to trigger a segmentation fault leading to a denial of service due to uncontrolled recursion in the parser.","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":"2026-11-09","score":0.00268,"percentile":0.19073,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-674"],"published":"2026-06-12T20:52:58Z","modified":"2026-10-25T23:10:00Z","products":[{"vendor":"ibm","product":"qiskit sdk"},{"vendor":"ibm","product":"qiskit_software_development_kit"}],"references":[{"url":"https://www.ibm.com/support/pages/node/7276123","tags":["vendor-advisory","patch","Vendor Advisory"]}],"sources":{"cve":[{"id":"CVE-2026-4870","title":"Qiskit SDK is vulnerable to specific functions may recurse too deeply and overflow the available stack space, when encountering certain classical expressions.","description":"IBM Qiskit SDK 0.43.0 through 2.5.0 could allow an attacker to trigger a segmentation fault leading to a denial of service due to uncontrolled recursion in the parser.","status":"published","published":"2026-06-12T20:52:58.528Z","modified":"2026-06-15T13:37:47.83Z","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-674"],"updated_at":"2026-11-02T14:19:59.369956Z"}],"euvd":[{"id":"EUVD-2026-36575","description":"IBM Qiskit SDK 0.43.0 through 2.5.0 could allow an attacker to trigger a segmentation fault leading to a denial of service due to uncontrolled recursion in the parser.","status":"published","published":"2026-06-12T20:52:58Z","modified":"2026-06-15T13:37:47Z","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":"2026-11-02T18:20:41.888684Z"}],"nvd":[{"id":"CVE-2026-4870","description":"IBM Qiskit SDK 0.43.0 through 2.5.0 could allow an attacker to trigger a segmentation fault leading to a denial of service due to uncontrolled recursion in the parser.","status":"published","published":"2026-06-12T21:16:23.963Z","modified":"2026-10-25T23:10:00.167Z","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"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:12:23.846948Z"}]}}