CVE-2025-61622

Name: CVE-2025-61622
Creator: NVD / NIST
Published: 2025-10-01T10:15:34.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 49.53%

Last modified Jun 17, 2026

CVE-2025-61622 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 49.53% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

49.53%

98.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Apache	Fory	>= 0.1.0, <= 0.10.3
Apache	Fory	>= 0.12.0, <= 0.12.2

References

https://lists.apache.org/thread/vfn9hp9qt06db5yo1gmj3l114o3o2csdIssue Tracking, Vendor Advisory
http://www.openwall.com/lists/oss-security/2025/09/29/3Mailing List, Third Party Advisory

Timeline

Published: Oct 1, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-61622?

How severe is CVE-2025-61622?

CVE-2025-61622 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 49.53% probability of exploitation in the next 30 days.

How do I fix CVE-2025-61622?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-61622?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST