Segmentation Fault via Uncontrolled Recursion in IBM Qiskit SDK

Publication date: 2026-06-12

Last updated on: 2026-06-16

Assigner: IBM Corporation

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-12

Last Modified

2026-06-16

Generated

2026-07-03

AI Q&A

2026-06-13

EPSS Evaluated

2026-07-01

NVD

CVE-2026-4870

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	qiskit_software_development_kit	From 0.43.0 (inc) to 1.4.6 (exc)
ibm	qiskit_software_development_kit	From 2.0.0 (inc) to 2.4.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-674	The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

Attack-Flow Graph

Executive Summary

This vulnerability exists in IBM Qiskit SDK versions 0.43.0 through 2.5.0. It allows an attacker to cause a segmentation fault by exploiting uncontrolled recursion in the parser component of the software.

The segmentation fault can lead to a denial of service condition, meaning the software could crash or become unavailable.

Impact Analysis

The primary impact of this vulnerability is a denial of service (DoS) attack. An attacker can exploit the uncontrolled recursion to cause the software to crash, making the IBM Qiskit SDK unavailable for legitimate users.

There is no indication that this vulnerability affects confidentiality or integrity, but availability is impacted.

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