Unauthenticated File Upload Vulnerability in Yonyou KSOA 9.0
CVE-2022-50973

9.3CRITICAL

Key Information:

Vendor

Yonyou Network Technology Co., Ltd.

Status
Ksoa
Vendor
CVE Published:
2 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2022-50973?

Yonyou KSOA 9.0 is vulnerable to an unauthenticated file upload issue in the com.sksoft.bill.ImageUpload servlet. This flaw allows attackers to upload arbitrary files simply by submitting a POST request with manipulated filepath and filename parameters, bypassing crucial authentication, file type, and content validations. A successful exploitation can lead to remote code execution via a JSP webshell, with the malicious file stored in the pictures directory and executed by the web server. Evidence of exploitation was first documented by the Shadowserver Foundation on November 7, 2023.

Affected Version(s)

KSOA 9.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2022-50973 - Proof of Concept

CVE-2022-50973 - Proof of Concept

CVE-2022-50973 - Proof of Concept

References

https://cn-sec.com/archives/1329088.html
technical-descriptionexploit
https://buaq.net/go-167023.html
exploittechnical-description
https://www.cnblogs.com/yang-miemie/p/17714927.html
technical-descriptionexploit

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

The Shadowserver Foundation
.