CVE-2025-61622
Apache Fory, Apache Fory: Python RCE via unguarded pickle fallback serializer in pyfory
CRITICAL 9.8EPSS 43.5%
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.
- Affected
- Apache Software Foundation · Apache Fory
- CVSS v3.1 CNA
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 43.51% chance of exploitation in the next 30 days, 99th percentile
- Published
- 2025-10-01
- Updated
- 2025-11-04
Proof-of-concept exploits (1)
- fa1consec/cve_2025_61622_poc4★ · 2025-10-03
Security advisories
- https://lists.apache.org/thread/vfn9hp9qt06db5yo1gmj3l114o3o2csd
- http://www.openwall.com/lists/oss-security/2025/09/29/3
- advisories/GHSA-538v-3wq9-4h3r