Arbitrary file upload in Yonyou U8 Cloud
CVE-2025-12344
A vulnerability has been found in Yonyou U8 Cloud up to 5.1sp. The impacted element is an unknown function of the file /service/NCloudGatewayServlet of the component Request Header Handler. Such manipulation of the argument ts/sign leads to unrestricted upload. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (15.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000
Affected products
- Yonyou U8 Cloud — versions 2.0, 2.1, 2.3
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- github.com/IceSc0rpion/CVE/issues/1 (issue-tracking, exploit)
Frequently asked questions
- What is CVE-2025-12344?
- CVE-2025-12344 is a medium-severity vulnerability in Yonyou U8 Cloud, classified under Improper Access Control. CVSS score: 6.3/10. Published 2025-10-28.
- How severe is CVE-2025-12344?
- Medium severity. CVSS v3 base score is 6.3 out of 10.