Vulnerability in Picklescan
CVE-2025-71323
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (62.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 63rd percentile — 62.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Picklescan — versions 0, 0.0.33
Weakness classification (CWE)
References
- github.com/mmaitre314/picklescan/security/advisories/GHSA-4675-36f9-wf6r (vendor-advisory)
- www.vulncheck.com/advisories/picklescan-remote-code-execution-via-unblocked-cty… (third-party-advisory)
Frequently asked questions
- What is CVE-2025-71323?
- CVE-2025-71323 is a critical-severity vulnerability in Picklescan, classified under Incomplete List of Disallowed Inputs. CVSS score: 9.8/10. Published 2026-06-17.
- How severe is CVE-2025-71323?
- Critical severity. CVSS v3 base score is 9.8 out of 10.