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OpenAdvisories
Medium · 6.2 CVE-2026-19795 EUVD-2026-70714

Qiskit SDK is vulnerable when deserializing QPY Files and may overflow the available stack space.

Published Sep 3, 2026 · Updated Sep 4, 2026 · Assigned by ibm

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.

Affected products

VendorProductAffectedFixed
IBM Qiskit SDK 2.1.0 – ≤ 2.5.1 —

References