Unrestricted File Upload Vulnerability in ZS-Admin by zsadmin2025
CVE-2026-16451

5.3MEDIUM

Key Information:

Vendor

Zsadmin2025

Status
Zs-admin
Vendor
CVE Published:
21 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-16451?

A security flaw exists in the ZS-Admin product developed by zsadmin2025, specifically affecting the file handling component com.zs.file.controller.SysFileController. This vulnerability allows for unrestricted file uploads through manipulation of the File argument in the /api/system/file/upload endpoint. As a result, attackers can exploit this weakness remotely, risking unauthorized access to the system and potential data breaches. This flaw has been publicly disclosed, and despite the development team's awareness of the issue, no patches or updates have been released to alleviate this security concern.

Affected Version(s)

ZS-Admin b52e14536d59fda11e56e2536a1c32e82a38cead

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-2026-16451 - Proof of Concept

References

https://vuldb.com/vuln/380830
vdb-entrytechnical-description
https://vuldb.com/vuln/380830/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-16451
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

cl0ney (VulDB User)
VulDB CNA Team
.