---
id: CVE-2025-71364
title: >-
  picklescan before 0.0.30 fails to detect the
  asyncio.unix_events._UnixSubprocessTransport._start function in pickle reduce
  methods, allowing remote code execution
summary: >-
  picklescan before 0.0.30 fails to detect the
  asyncio.unix_events._UnixSubprocessTransport._start function in pickle reduce
  methods, allowing remote code execution. Attackers can craft malicious pickle
  files embedding this built-in functi…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-502
published: '2026-07-04'
updated: '2026-07-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-71364'
references:
  - url: >-
      https://github.com/mmaitre314/picklescan/security/advisories/GHSA-q77w-mwjj-7mqx
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-undetected-asyncio-unix-events-unixsubprocesstransport-start
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00826
epssPercentile: 0.55644
ingestedAt: '2026-07-04T21:57:46.846Z'
---

## Overview

picklescan before 0.0.30 fails to detect the asyncio.unix_events._UnixSubprocessTransport._start function in pickle reduce methods, allowing remote code execution. Attackers can craft malicious pickle files embedding this built-in function that evade detection but execute arbitrary commands when loaded.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.