Unrestricted File Upload Vulnerability in D-Link DNS-320
CVE-2026-16447

6.9MEDIUM

Key Information:

Vendor

D-link
Status
Dns-320
Vendor
CVE Published:
21 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-16447?

A security flaw has been identified in D-Link's DNS-320 version 1.0.2, specifically within the multi_uploadify.php file. This vulnerability allows attackers to manipulate the Filedata[] argument, leading to unrestricted file uploads. The potential for remote exploitation is significant, given that the exploit has been publicly disclosed and may be actively exploited. Organizations using affected versions are strongly urged to assess their risks and apply necessary protections.

Affected Version(s)

DNS-320 1.0.2

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-2026-16447 - Proof of Concept

References

https://vuldb.com/vuln/380826
vdb-entrytechnical-description
https://vuldb.com/vuln/380826/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-16447
third-party-advisory

CVSS V4

Score:
6.9
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

red88-debug (VulDB User)
.