CVE-2025-71323

picklescan - Remote Code Execution via Unblocked ctypes Module

publishedCWE-184

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.

Technical severity9.3 criticalCVSS 4.0 · CNA: VulnCheck

Published2026-06-17Source updated 2026-11-08

Collected2026-11-083 attributed sources

Fixes and workarounds

Fix

picklescan (PyPI): OSV reports a fixed version 0.0.33. Check the advisory for supported release branches.

Source: OSV GHSA-4675-36f9-wf6r

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
picklescan picklescan `picklescan` pypi	≥ 0; < 0.0.33 (affected, semver) 0.0.33 (unaffected, semver) Other versions: unaffected	CNA: VulnCheck
picklescan `picklescan` PyPI	0.0.1 (affected, PyPI) 0.0.10 (affected, PyPI) 0.0.11 (affected, PyPI) 0.0.12 (affected, PyPI) 0.0.13 (affected, PyPI) 0.0.14 (affected, PyPI) 0.0.15 (affected, PyPI) 0.0.16 (affected, PyPI) 0.0.17 (affected, PyPI) 0.0.18 (affected, PyPI) 0.0.19 (affected, PyPI) 0.0.2 (affected, PyPI) 0.0.20 (affected, PyPI) 0.0.21 (affected, PyPI) 0.0.22 (affected, PyPI) 0.0.23 (affected, PyPI) 0.0.24 (affected, PyPI) 0.0.25 (affected, PyPI) 0.0.26 (affected, PyPI) 0.0.27 (affected, PyPI) 0.0.28 (affected, PyPI) 0.0.29 (affected, PyPI) 0.0.3 (affected, PyPI) 0.0.30 (affected, PyPI) 0.0.31 (affected, PyPI) 0.0.32 (affected, PyPI) 0.0.4 (affected, PyPI) 0.0.5 (affected, PyPI) 0.0.6 (affected, PyPI) 0.0.7 (affected, PyPI) 0.0.8 (affected, PyPI) 0.0.9 (affected, PyPI) Ecosystem version events: introduced 0; fixed 0.0.33 Source events (ECOSYSTEM) `[ { "introduced": "0" }, { "fixed": "0.0.33" } ]` Other versions: unaffected	OSV GHSA-4675-36f9-wf6r

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
4.0 / 9.3 critical	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`	CNA: VulnCheck
3.1 / 9.8 critical	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`	CNA: VulnCheck

Exploit evidence

https://github.com/mmaitre314/picklescan/security/advisories/GHSA-4675-36f9-wf6r
exploit · ADP: CISA-ADP

References

https://github.com/mmaitre314/picklescan/security/advisories/GHSA-4675-36f9-wf6rCNA: VulnCheck · vendor-advisory
https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-unblocked-ctypes-moduleCNA: VulnCheck · third-party-advisory
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-4675-36f9-wf6rADP: CISA-ADP · exploit
https://github.com/advisories/GHSA-4675-36f9-wf6rOSV / GitHub Security Advisories · advisory
https://osv.dev/vulnerability/GHSA-4675-36f9-wf6rOSV / GitHub Security Advisories · osv

For agents and automation

Read public disclosures for free as Markdown or JSON. Compatible browsers also expose native WebMCP tools to search disclosures, read this page, and discover API access.

Use the ontology-linked Cyber API with x402 pay per request, or a Y2 Pro or Elite API key with the intel:cyber scope.

Get an API key Use x402 Connect an agent

Endpoints and access details

https://api.y2.dev/api/v2/cyber/cves
https://api.y2.dev/api/v2/cyber/cves/{cveId}

A workspace owner or admin can create a Pro or Elite API key. Send Authorization: Bearer <Y2_API_KEY> from your trusted agent runtime.

For x402, omit Authorization and read the HTTP 402 payment challenge before signing a retry. Public browser tools do not make payments.

Agent access JSON · OpenAPI · CVE API guide