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CVE-2025-1945

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Date: March 10, 2025

picklescan before 0.0.23 fails to detect malicious pickle files inside PyTorch model archives when certain ZIP file flag bits are modified. By flipping specific bits in the ZIP file headers, an attacker can embed malicious pickle files that remain undetected by PickleScan while still being successfully loaded by PyTorch's torch.load(). This can lead to arbitrary code execution when loading a compromised model.

Severity Score

Related Resources (6)

https://github.com/mmaitre314/picklescan/commit/e58e45e0d9e091159c1554f9b04828bbb40b9781
https://github.com/mmaitre314/picklescan
https://nvd.nist.gov/vuln/detail/CVE-2025-1945
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-w8jq-xcqf-f792
https://github.com/pypa/advisory-database/tree/main/vulns/picklescan/PYSEC-2025-21.yaml
https://www.mend.io/vulnerability-database/CVE-2025-1945

Severity Score

Weakness Type (CWE)

Insufficient Verification of Data Authenticity

CWE-345

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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