CVE-2025-71323

CRITICAL 9.8

picklescan - Remote Code Execution via Unblocked ctypes Module

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

picklescan before 0.0.33 fails to block the ctypes module, allowing attackers to achieve remote code execution by invoking direct syscalls and accessing raw memory. Attackers can craft malicious pickle files using ctypes.WinDLL to load kernel32.dll and execute arbitrary commands, bypassing sandbox protections and gadget chain detection.

CWE	CWE-184
Vendor	picklescan
Product	picklescan
Published	Jun 17, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

picklescan / picklescan

0 < 0.0.33

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/mmaitre314/picklescan/security/advisories/GHSA-4675-36f9-wf6r vulncheck.com: https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-unblocked-ctypes-module

Credits

🔍 0x-Apollyon