CVE-2022-50973 (GCVE-0-2022-50973)

Vulnerability from cvelistv5 – Published: 2026-07-02 17:04 – Updated: 2026-07-02 19:44 X_Known Exploited Vulnerability
VLAI Shadowserver Previdian
Title
Yonyou KSOA 9.0 Unauthenticated File Upload RCE via ImageUpload Servlet
Summary
Yonyou KSOA 9.0 contains an unauthenticated arbitrary file upload vulnerability in the com.sksoft.bill.ImageUpload servlet that allows unauthenticated attackers to upload arbitrary files by submitting a POST request with attacker-controlled filepath and filename parameters without any authentication, file type, extension, or content validation. Attackers can upload a JSP webshell by specifying a malicious filename and root filepath, with the uploaded file stored under the pictures directory and directly executed by the web server, resulting in unauthenticated remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-11-07 (UTC).
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-02 19:33 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Vendor Product Version CPE status
Yonyou Network Technology Co., Ltd. KSOA Affected: 9.0 (custom)
guessed Create a notification for this product.
Date Public
2022-10-05 00:00
Credits
The Shadowserver Foundation
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 2ff8c889-c797-4d25-b2a8-38435da7bbd4

Vulnerability ID: CVE-2022-50973

Status: Confirmed

Status Updated: 2026-08-29 00:00 UTC

Exploited: Yes

Characteristics
Severity: 98.0
Timestamps
First Seen: 2026-08-17
Asserted: 2026-08-17
Last Seen: 2026-08-29
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Yonyou / Yonyou KSOA | Class: other-software | Severity: Critical (CVSS 9.8) | IoT: no | In CISA KEV: no | Honeypot connections on 2026-08-29: 1
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class other-software
7D Avg 0
Vendor Yonyou
30D Avg 0
90D Avg 0
Product Yonyou KSOA
Cisa Kev no
Connections 1
Observation Date 2026-08-29
Vulnerability Class CVSS
Vulnerability Score 9.8
Vulnerability Severity Critical
References
Created: 2026-08-19 01:01 UTC | Updated: 2026-08-31 01:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: af468601-3853-4384-bbc1-40ce50346ead

Vulnerability ID: CVE-2022-50973

Status: Confirmed

Status Updated: 2026-08-17 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-08-17
Asserted: 2026-08-17
Scope
Notes: Yonyou KSOA 9.0 Unauthenticated File Upload RCE via ImageUpload Servlet | Affected: Yonyou Network Technology Co., Ltd. / KSOA | CVSS: 9.3 (CRITICAL) | EPSS: 0.0086 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Yonyou KSOA 9.0 Unauthenticated File Upload RCE via ImageUpload Servlet
Vendor Yonyou Network Technology Co., Ltd.
Product KSOA
Added Date 2026-08-17T00:00:00.000Z
Cvss Score 9.3
Epss Score 0.0086
Cvss Severity CRITICAL
Epss Percentile 0.55478
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-08-18 11:00 UTC | Updated: 2026-08-18 11:00 UTC
Show details on NVD website
To clipboard 

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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