CVE-2025-61622
CriticalCVSS 9.8Exploitation Probability (EPSS)
Very high risk99th percentile - higher than 99% of all known CVEs
Summary
Vulnerability in pyfory library (versions 0.12.0-0.12.2 and legacy 0.1.0-0.10.3) allows deserialization of untrusted data, leading to arbitrary code execution. An attacker can craft a data stream that forces the pickle-fallback serializer, resulting in pickle.loads and remote code execution.
Risk Assessment
Organizations using pyfory to process data from untrusted sources are exposed to remote code execution, potentially leading to full system compromise.
Recommendation
Upgrade pyfory to version 0.12.3 or later, which removes the pickle-fallback serializer.
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Original NVD description (English source)
Deserialization of untrusted data in python in pyfory versions 0.12.0 through 0.12.2, or the legacy pyfury versions from 0.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources. An attacker can craft a data stream that selects pickle-fallback serializer during deserialization, leading to the execution of `pickle.loads`, which is vulnerable to remote code execution. Users are recommended to upgrade to pyfory version 0.12.3 or later, which has removed pickle fallback serializer and thus fixes this issue.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

