CVE-2026-19795
IBM Qiskit SDK 2.1.0 through 2.5.1 could allow a local attacker to cause a denial of service due to improper handling of a specially crafted object during deserialization. A malicious QPY payload can trigger a segmentation fault, causing the application to crash when deserializing untrusted input.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.2
- CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS probability
- 0.11%
- CWE
- CWE-502
- Published
- 2026-09-03
- Last modified
- 2026-09-04
Affected products
- IBM Qiskit SDK
Weakness type
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