CVE-2025-2000 — Vulnerability in qiskit-terra — CVE Details

CRITICAL

Qiskit allows arbitrary code execution decoding QPY format versions < 13

Published March 14, 2025Updated June 29, 2026Source: osv

Summary

### Impact A maliciously crafted QPY file can potentially execute arbitrary-code embedded in the payload without privilege escalation when deserializing QPY formats < 13. A python process calling Qiskit's `qiskit.qpy.load()` function could potentially execute any arbitrary Python code embedded in the correct place in the binary file as part of a specially constructed payload. ### Patches Fixed in Qiskit 1.4.2 and in Qiskit 2.0.0rc2

Advisory Timeline

First published March 14, 2025 (577 days ago).
Last revised June 29, 2026 — 472 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

pip

Update qiskit to 1.4.2 or later

pip install "qiskit>=1.4.2"

pip

Update qiskit to 2.0.0rc2 or later

pip install "qiskit>=2.0.0rc2"

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (3)

Affects 1 ecosystem: pypi (2).

Package	Ecosystem	Affected	Fixed In
qiskit-terra	pypi	0.18.0, 0.18.1, 0.18.2, 0.18.3 (+40 more)	Range-based data available
qiskit	pypi	0.10.0, 0.10.1, 0.10.2, 0.10.3 (+170 more)	1.4.2
qiskit	pypi	2.0.0rc1	2.0.0rc2

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-502
Deserialization of Untrusted DataMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2025-2000?: Qiskit allows arbitrary code execution decoding QPY format versions < 13 This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2025-2000?: CVE-2025-2000 affects qiskit-terra and qiskit. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2025-2000 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-6m2c-76ff-6vrf

PYSEC-2026-510

PYSEC-2026-511

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