{"id":"CVE-2026-19795","aliases":["EUVD-2026-70714"],"status":"published","title":"Qiskit SDK is vulnerable when deserializing QPY Files and may overflow the available stack space.","description":"Qiskit could allow a local attacker to cause a denial of service due to a stack overflow during deserialization of QPY payloads. A malicious QPY payload can trigger a segmentation fault, causing the application to crash when deserializing untrusted input.","severity":{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00296,"percentile":0.22479,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2026-09-03T19:56:03Z","modified":"2026-09-08T14:17:08Z","products":[{"vendor":"ibm","product":"qiskit sdk"}],"references":[{"url":"https://www.ibm.com/support/pages/node/7285932","tags":["vendor-advisory","patch"]}],"sources":{"cve":[{"id":"CVE-2026-19795","title":"Qiskit SDK is vulnerable when deserializing QPY Files and may overflow the available stack space.","description":"Qiskit could allow a local attacker to cause a denial of service due to a stack overflow during deserialization of QPY payloads. A malicious QPY payload can trigger a segmentation fault, causing the application to crash when deserializing untrusted input.","status":"published","published":"2026-09-03T19:56:03.172Z","modified":"2026-09-04T20:05:30.49Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T13:47:17.512524Z"}],"euvd":[{"id":"EUVD-2026-70714","description":"Qiskit could allow a local attacker to cause a denial of service due to a stack overflow during deserialization of QPY payloads. A malicious QPY payload can trigger a segmentation fault, causing the application to crash when deserializing untrusted input.","status":"published","published":"2026-09-03T19:56:03Z","modified":"2026-09-04T20:05:30Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T18:01:11.238356Z"}],"nvd":[{"id":"CVE-2026-19795","description":"Qiskit could allow a local attacker to cause a denial of service due to a stack overflow during deserialization of QPY payloads. A malicious QPY payload can trigger a segmentation fault, causing the application to crash when deserializing untrusted input.","status":"published","published":"2026-09-03T20:17:19.79Z","modified":"2026-09-08T14:17:08.94Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:12:43.737972Z"}]}}