CVE Catalog

CVE-2026-19795

MediumCVSS 6.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.11%

1th percentile - higher than 1% of all known CVEs

Summary

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.

Risk Assessment

A DoS attack could crash the Qiskit application, potentially disrupting quantum computations and other operations relying on Qiskit.

Recommendation

Upgrade Qiskit to the latest version that includes a fix for this issue. Avoid deserializing untrusted QPY files.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS