# CVE-2022-50973: CVE-2022-50973

Status: published. Published: 2026-07-02. Updated: 2026-11-10.

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).

## Remediation

No remediation reported in collected sources

## Affected products and versions

Not reported in collected sources.

## Severity and prioritization

- CVSS 4.0: 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 9.8 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable yes; technical impact total; source NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0

- Weaknesses: CWE-434

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://buaq.net/go-167023.html (disclosure@vulncheck.com)

- https://cn-sec.com/archives/1329088.html (disclosure@vulncheck.com)

- https://www.cnblogs.com/yang-miemie/p/17714927.html (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/yonyou-ksoa-unauthenticated-file-upload-rce-via-imageupload-servlet (disclosure@vulncheck.com)

- https://www.yonyou.com/ (disclosure@vulncheck.com)

## Provenance

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-50973; retrieved 2026-11-10; source updated 2026-11-10

Revision: 3f9d10422bc8a536f853af38d537ad43b4b4cdc624be2cddad567ed5ae73c89a

Canonical: https://y2.dev/cve/CVE-2022-50973

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