CVE-2025-71340: picklescan through 0.0.26 fails to detect malicious pickle files that invoke idlelib.pyshell.ModifiedInterpreter.runcode in reduce methods. Attackers can embed undetected code

highCVSS 8.1CVE-2025-71340

picklescan through 0.0.26 fails to detect malicious pickle files that invoke idlelib.pyshell.ModifiedInterpreter.runcode in reduce methods. Attackers can embed undetected code in pickle files that executes arbitrary commands when the file is loaded via pickle.load(), enabling supply chain attacks on PyTorch models and saved Python objects. This is fixed in version 0.0.30.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: high — CVSS 8.1
Published: 2026-06-25
Last updated: 2026-06-26
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-71340

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2025-713400.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-71340	coverage & exploitation status	NVD · CVE.org

Recent advisories for picklescan

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2025-71375: picklescan before 0.0.34 fails to detect the _operator.methodcaller built-in function when sca…nvd · 2026-07-04
highCVE-2025-71373: picklescan before 0.0.33 fails to detect operator.methodcaller function calls in pickle files,…nvd · 2026-07-04
highCVE-2025-71372: Picklescan before 0.0.33 fails to detect the numpy.f2py.crackfortran.getlincoef gadget in pick…nvd · 2026-07-04
highCVE-2025-71369: picklescan before 0.0.28 fails to detect malicious pickle files that use torch.utils.data.data…nvd · 2026-07-04
highCVE-2025-71367: picklescan before 0.0.34 fails to detect _operator.attrgetter function calls in pickle payload…nvd · 2026-07-04
highCVE-2025-71366: picklescan before 0.0.28 fails to detect malicious torch.utils.bottleneck.__main__.run_cprofil…nvd · 2026-07-04

CVE-2025-71340: picklescan through 0.0.26 fails to detect malicious pickle files that invoke idlelib.pyshell.ModifiedInterpreter.runcode in __reduce__ methods. Attackers can embed undetected code

Details

Exploitation outlook

Referenced CVEs

Recent advisories for picklescan

More from NVD Recent CVEs

CVE-2025-71340: picklescan through 0.0.26 fails to detect malicious pickle files that invoke idlelib.pyshell.ModifiedInterpreter.runcode in reduce methods. Attackers can embed undetected code