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VulnerabilityPublished Updated

CVE-2025-70560: Boltz 2.0.0 contains an insecure deserialization

Affects boltzSource CVE Database V5

0

Not known to be exploited · CVSS 8.4 High.

Data as of 26 Oct 2026, 09:16 UTC

CVSS 3.1 base score
8.4High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
PyPIboltzpkg:pypi/boltzOther threatsAffected
  • =2.0.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

To mitigate CVE-2025-70560, organizations should immediately restrict write permissions to directories processed by Boltz to trusted users only, minimizing the risk of malicious file placement. Implement network segmentation and access controls to limit who can write to these directories, especially over network shares. Consider running Boltz in a sandboxed or containerized environment with minimal privileges to contain potential exploitation. Monitor file system activity for unexpected or suspicious pickle files. If possible, replace or modify the molecule loading functionality to avoid using Python pickle for deserialization or implement strict validation and allowlisting of deserialized data. Stay alert for official patches or updates from Boltz developers and apply them promptly once available. Additionally, conduct regular security audits and penetration testing focused on file handling and deserialization vulnerabilities in scientific software environments.

Description

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.

References

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