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Vulnerability record · CVE-2025-1945 · published 10 March 2025

CVE-2025-1945: Mmaitre314 picklescan insufficient verification of data authenticity vulnerability

MMmaitre314 · Picklescan

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.

5.3 CVSS 4.0 Medium EPSS 0.55% · top 56.0% CWE-345 · Insufficient verification of data authenticity
5.3CVSS 4.0 base score
0.55%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/mmaitre314/picklescan/commit/e58e45e0d9e091159c1554f9b04828bbb40b9781 Patch
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-w8jq-xcqf-f792 ExploitVendor Advisory
https://www.sonatype.com/security-advisories/cve-2025-1945

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.3CVE-2025-10157Mmaitre314 picklescan vulnerabilityA Protection Mechanism Failure vulnerability in mmaitre314 picklescan versions up to and including 0.0.30 allows a remote attacker to bypass the unsa…EPSS 0.79%9.3CVE-2025-10156Mmaitre314 picklescan vulnerabilityAn Improper Handling of Exceptional Conditions vulnerability in the ZIP archive scanning component of mmaitre314 picklescan allows a remote attacker …EPSS 1.5%9.3CVE-2025-10155Mmaitre314 picklescan improper input validation vulnerabilityAn Improper Input Validation vulnerability in the scanning logic of mmaitre314 picklescan versions up to and including 0.0.30 allows a remote attacke…EPSS 0.85%7.6CVE-2025-71357Mmaitre314 picklescan deserialization of untrusted data vulnerabilitypicklescan before 0.0.30 fails to detect malicious pickle files using idlelib.pyshell.ModifiedInterpreter.runcommand in reduce methods. Attackers can…EPSS 0.39%7.6CVE-2025-71378Mmaitre314 picklescan deserialization of untrusted data vulnerabilitypicklescan before 0.0.30 fails to detect cProfile.runctx function calls in pickle file reduce methods, allowing attackers to execute arbitrary code. …EPSS 0.48%7.6CVE-2025-71348Mmaitre314 picklescan deserialization of untrusted data vulnerabilitypicklescan before 0.0.28 fails to detect malicious pickle files that invoke torch.utils._config_module.load_config function within reduce methods. At…EPSS 0.55%6.9CVE-2026-56304Mmaitre314 picklescan deserialization of untrusted data vulnerabilitypicklescan before 1.0.1 contains an unsafe pickle deserialization vulnerability allowing unauthenticated attackers to create arbitrary zero-byte file…EPSS 0.44%6.8CVE-2025-46417Mmaitre314 picklescan vulnerabilityThe unsafe globals in Picklescan before 0.0.25 do not include ssl. Consequently, ssl.get_server_certificate can exfiltrate data via DNS after deseria…EPSS 0.22%

Source: NIST National Vulnerability Database (record CVE-2025-1945), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.