Improper Access Controls in D-Link DIR-816 by D-Link
CVE-2026-4180

6.9MEDIUM

Key Information:

Vendor

D-link
Status
Dir-816
Vendor
CVE Published:
15 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4180?

A vulnerability exists in the D-Link DIR-816 model 1.10CNB05, specifically within the redirect.asp file of the goahead component. This flaw involves improper access controls due to manipulation of the token_id argument, enabling unauthorized access. The vulnerability can be exploited remotely, particularly affecting devices that are no longer supported by D-Link, with publicly available exploits increasing the risk of potential attacks.

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Affected Version(s)

DIR-816 1.10CNB05

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-2026-4180 - Proof of Concept

References

https://vuldb.com/?id.351084
vdb-entrytechnical-description
https://vuldb.com/?ctiid.351084
signaturepermissions-required
https://vuldb.com/?submit.769828
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

pjqwudi (VulDB User)
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