Deserialization in Picklescan
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 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.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Picklescan — versions 0, 0.0.30
Weakness classification (CWE)
References
- github.com/mmaitre314/picklescan/security/advisories/GHSA-3gf5-cxq9-w223 (vendor-advisory)
- www.vulncheck.com/advisories/picklescan-remote-code-execution-via-idlelib-pyshe… (third-party-advisory)
Frequently asked questions
- What is CVE-2025-71340?
- CVE-2025-71340 is a high-severity vulnerability in Picklescan, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2026-06-25.
- How severe is CVE-2025-71340?
- High severity. CVSS v3 base score is 8.1 out of 10.