Improper Access Control in D-Link DIR-823G
CVE-2026-4193

6.9MEDIUM

Key Information:

Vendor

D-link
Status
Dir-823g
Vendor
CVE Published:
15 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4193?

A vulnerability has been identified in the D-Link DIR-823G (version 1.0.2B05), specifically within the functions related to various network settings, including GetDDNSSettings and SetAccessCtlList. Due to improper access controls, unauthorized users may manipulate these functions remotely, leading to potential compromise of the device's security. This vulnerability is particularly concerning as it affects products that are no longer supported by the vendor, raising the urgency for users to take proactive security measures.

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Affected Version(s)

DIR-823G 1.0.2B05

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-2026-4193 - Proof of Concept

References

https://vuldb.com/?id.351105
vdb-entrytechnical-description
https://vuldb.com/?ctiid.351105
signaturepermissions-required
https://vuldb.com/?submit.769835
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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