Denial of Service Vulnerability in qinming99 File Handler
CVE-2026-2957

5.3MEDIUM

Key Information:

Vendor

Qinming99

Status
Dst-admin
Vendor
CVE Published:
22 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2957?

A weakness exists in the qinming99 dst-admin product, specifically within the deleteBackup function in the BackupController.java file. This vulnerability allows remote attackers to manipulate the file handler, resulting in a denial of service. The exploitation of this vulnerability can cause significant disruptions, as it has been publicly disclosed and may be leveraged by malicious actors. The vendor had been informed of this issue prior to public disclosure but failed to respond.

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Affected Version(s)

dst-admin 1.0

dst-admin 1.1

dst-admin 1.2

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-2026-2957 - Proof of Concept

References

https://vuldb.com/?id.347324
vdb-entrytechnical-description
https://vuldb.com/?ctiid.347324
signaturepermissions-required
https://vuldb.com/?submit.754510
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
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

xcxr (VulDB User)
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