CVE-2025-61622: apache software foundation apache fory Deserialization of Untrusted Data
Vulnerability summary
CVE-2025-61622 is a critical (CVSS 9.8) Deserialization of Untrusted Data vulnerability in apache software foundation apache fory. EPSS estimates a 43.51% chance of exploitation in the next 30 days, higher than 98.7% of scored vulnerabilities.
Timeline
- 01-10-2025PublishedVulnerability first disclosed.
- 04-11-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · PypiEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
43.51%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 43.51% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
PyPI2 products
- pyfory≥ 0.12.0, < 0.12.3
- pyfury≥ 0.1.0, ≤ 0.10.3
Apache1 product
- fory≥ 0.1.0, ≤ 0.10.3 | ≥ 0.12.0, ≤ 0.12.2
Apache software foundation1 product
- apache fory≥ 0.12.0, ≤ 0.12.2 | ≥ 0.1.0, ≤ 0.10.3
3 vendors · 4 products
References
10 links
- github.com/apache/foryPACKAGE
- pypi.org/project/pyforyPACKAGE
- pypi.org/project/pyfuryPACKAGE