What is the CVSS score of CVE-2025-70560?

CVE-2025-70560 has a CVSS 3.1 base score of 8.4 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Python are affected by CVE-2025-70560?

Boltz 2.0.0 contains a critical deserialization flaw that could allow attackers to execute arbitrary code by uploading malicious molecule data files.

How to fix or mitigate CVE-2025-70560?

Within 24 hours: Inventory all Boltz 2.0.0 deployments and identify which process untrusted molecule data; disable molecule loading functionality if not business-critical. Within 7 days: Implement network segmentation to isolate affected systems and restrict file upload sources to trusted internal channels only. Within 30 days: Monitor vendor communications for patch availability; evaluate alternative molecule processing tools or upgrade to patched version immediately upon release.

Python CVE-2025-70560

HIGH

Deserialization of Untrusted Data (CWE-502)

2026-02-03 cve@mitre.org

GHSA-fjm6-8xp2-4fwc

Python Deserialization Boltz RCE

8.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.4 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Feb 03, 2026 - 18:16 nvd

HIGH 8.4

DescriptionCVE.org

Boltz 2.0.0 contains an insecure deserialization vulnerability in its molecule loading functionality. The application uses Python pickle to deserialize molecule data files without validation. An attacker with the ability to place a malicious pickle file in a directory processed by boltz can achieve arbitrary code execution when the file is loaded.

AnalysisAI

Technical ContextAI

Classified as CWE-502 (Deserialization of Untrusted Data). Affects the its molecule loading component of Boltz. Boltz 2.0.0 contains an insecure deserialization vulnerability in its molecule loading functionality. The application uses Python pickle to deserialize molecule data files without validation. An attacker with the ability to place a malicious pickle file in a directory processed by boltz can achieve arbitrary code execution when the file is loaded.