CVE Tools
Sign in

CVE-2025-61622

Apache Fory, Apache Fory: Python RCE via unguarded pickle fallback serializer in pyfory

Published: Oct 1, 2025Updated: Dec 3, 2025 Sources: CVE List NVD GHSACWE-502
9.8CRITICAL
NVD MITRE
EPSS Score
41.3%
Top 1.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-502

Affected Products

PyPI
package-ecosystem
pyfory
OSS Libraries
pyfury
OSS Libraries
Apache Software Foundation
oss-project·USaka apache foundation
Apache ForyOn-prem
Databases / cache-message-queue
apache
oss-project·USaka apache httpd, apache http server
foryLibraryLibrary
OSS Libraries / generic-library

Exploitability

Official Patch Available
Is your org exposed to CVE-2025-61622?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://lists.apache.org/thread/vfn9hp9qt06db5yo1gmj3l114o3o2csd
lists.apache.org
http://www.openwall.com/lists/oss-security/2025/09/29/3
openwall.com
https://nvd.nist.gov/vuln/detail/CVE-2025-61622
nvd.nist.gov
and 4 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2025-61622 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows