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Vulnerability record · CVE-2025-71364 · published 4 July 2026

CVE-2025-71364: Deserialization of untrusted data vulnerability

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.

7.6 CVSS 4.0 High EPSS 0.83% · top 44.3% CWE-502 · Deserialization of untrusted data Deferred
7.6CVSS 4.0 base score
0.83%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
7 Jul 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/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:

References

LinkTags
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-q77w-mwjj-7mqx
https://www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-undetected-asyncio-unix-events-unixsubproce
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-q77w-mwjj-7mqx

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Source: NIST National Vulnerability Database (record CVE-2025-71364), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.