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.
Fix
Public exploits 1
- fa1consec/cve_2025_61622_poc PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 1
- https://lists.apache.org/thread/vfn9hp9qt06db5yo1gmj3l114o3o2csd Issue Tracking, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.8 · apacheNVD modified 2026-10-09 09:10
Affected (CPE criteria) 1
cpe:2.3:a:apache:fory:*:*:*:*:*:*:*:*
References 2
- https://lists.apache.org/thread/vfn9hp9qt06db5yo1gmj3l114o3o2csd Issue Tracking, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2025/09/29/3 Mailing List, Third Party Advisory