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CVE-2025-61622— Apache Fory, Apache Fory: Python RCE via unguarded pickle fallback serializer in pyfory

Quick assessment

Affected
Apache Software Foundation Apache Fory
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Fory是Apache基金会的一个序列化框架。 Apache Fory存在安全漏洞，该漏洞源于反序列化不可信数据时使用pickle回退序列化器，可能导致任意代码执行。以下版本受到影响：pyfory 0.12.0版本至0.12.2版本和pyfury 0.1.0版本至0.10.3版本。

AI Predicted 9.8 Difficulty: Easy EPSS 45.12% · P99

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2025-61622

Vulnerability Information
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Vulnerability Title
Apache Fory, Apache Fory: Python RCE via unguarded pickle fallback serializer in pyfory
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Fory 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Fory是Apache基金会的一个序列化框架。 Apache Fory存在安全漏洞，该漏洞源于反序列化不可信数据时使用pickle回退序列化器，可能导致任意代码执行。以下版本受到影响：pyfory 0.12.0版本至0.12.2版本和pyfury 0.1.0版本至0.10.3版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Fory 0.12.0 ~ 0.12.2 -
Apache Software Foundation Apache Fory 0.1.0 ~ 0.10.3 -

II. Public POCs for CVE-2025-61622

# POC Description Source Link Shenlong Link
1 This PoC demonstrates the Remote Code Execution (RCE) vulnerability in Apache Pyfory (versions 0.12.0-0.12.2 and legacy PyFury 0.1.0-0.10.3) due to insecure pickle fallback deserialization (CVE-2025-61622). https://github.com/fa1consec/cve_2025_61622_poc POC Details
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III. Intelligence Information for CVE-2025-61622

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IV. Related Vulnerabilities

Same product: Apache Fory
Same vendor: Apache Software Foundation
Same weakness: CWE-502