D Link · Dir-823 · CVE-2026-4193
**Name of the Vulnerable Software and Affected Versions**
D-Link DIR-823G version 1.0.2B05
**Description**
A security issue has been identified in the D-Link DIR-823G. The problem stems from improper access controls within the `goahead` component, specifically related to the following functions: `GetDDNSSettings`, `GetDeviceDomainName`, `GetDeviceSettings`, `GetDMZSettings`, `GetFirewallSettings`, `GetGuestNetworkSettings`, `GetLanWanConflictInfo`, `GetLocalMacAddress`, `GetNetworkSettings`, `GetQoSSettings`, `GetRouterInformationSettings`, `GetRouterLanSettings`, `GetWanSettings`, `SetAccessCtlList`, `SetAccessCtlSwitch`, `SetDeviceSettings`, `SetGuestWLanSettings`, `SetIPv4FirewallSettings`, `SetNetworkSettings`, `SetNetworkTomographySettings`, `SetNTPServerSettings`, `SetRouterLanSettings`, `SetStaticClientInfo`, `SetStaticRouteSettings`, `SetWLanRadioSecurity`, `SetWPSSettings`, and `UpdateClientInfo`. This allows for remote manipulation. The exploit for this issue has been made public. It is important to note that this vulnerability affects products that are no longer supported by the vendor.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.