Arbitrary file upload in Qiyuesuo Eelectronic Signature Platform
CVE-2025-8775
A vulnerability was found in Qiyuesuo Eelectronic Signature Platform up to 4.34 and classified as critical. Affected by this issue is the function execute of the file /api/code/upload of the component Scheduled Task Handler. The manipulation of the argument File leads to unrestricted upload. The attack may be launched remotely. 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: 0.004 (35.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Qiyuesuo Eelectronic Signature Platform — versions 4.0, 4.1, 4.2
- Qiyuesuo Electronic Signature
Weakness classification (CWE)
Public proof-of-concept exploits
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/nn0nkey/nn0nkey/blob/main/QYS/QYS_task.md (Exploit, exploit)
Frequently asked questions
- What is CVE-2025-8775?
- CVE-2025-8775 is a medium-severity vulnerability in Qiyuesuo Eelectronic Signature Platform, classified under Improper Access Control. CVSS score: 6.3/10. Published 2025-08-09.
- How severe is CVE-2025-8775?
- Medium severity. CVSS v3 base score is 6.3 out of 10.
- Is CVE-2025-8775 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.