What’s Vulnerable › Vulnerabilities

CVE-2025-71323: picklescan - Remote Code Execution via Unblocked ctypes Module

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-17 · updated 2026-10-12
• Weakness: CWE-184

Description

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.

Affected products

• picklescan: before 0.0.33 — fixed in 0.0.33

How to fix

Upgrade to a fixed version: picklescan 0.0.33. Check the vendor advisory for mitigations.

References

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

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