CVE-2026-4193
D-Link DIR-823G goahead UpdateClientInfo access control
- State
- Published
- Severity
- 6.9 Medium
- Published
- Mar 15, 2026
- Updated
- Mar 16, 2026
- Reserved
- Mar 15, 2026
Description
A security vulnerability has been detected in D-Link DIR-823G 1.0.2B05. The affected element is the function 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/UpdateClientInfo of the component goahead. Such manipulation leads to improper access controls. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. This vulnerability only affects products that are no longer supported by the maintainer.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 7.3 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:W/RC:R | VulDB |
| 3.0 | 7.3 High | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:W/RC:R | VulDB |
| 2.0 | 7.5 High | AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:W/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
DIR-823GD-Link |
|
References
- VDB-351105 | D-Link DIR-823G goahead UpdateClientInfo access controlvdb-entrytechnical-description
- VDB-351105 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- Submit #769835 | D-Link 1.0.2B05 Improper Access Controlsthird-party-advisory
- Submit #769836 | D-Link DIR823G 1.0.2B05 Improper Access Controls (Duplicate)third-party-advisory
- Submit #769837 | D-Link DIR823G 1.0.2B05 Improper Access Controls (Duplicate)third-party-advisory
- Submit #769838 | D-Link DIR823G 1.0.2B05 Improper Access Controls (Duplicate)third-party-advisory
- Submit #769839 | D-Link DIR823G 1.0.2B05 Stack-based Buffer Overflow (Duplicate)third-party-advisory
- Submit #769841 | D-Link DIR823G 1.0.2B05 Improper Access Controls (Duplicate)third-party-advisory
- https://github.com/wudipjq/my_vuln/blob/main/D-Link7/vuln_91/91.mdrelated
- https://github.com/wudipjq/my_vuln/blob/main/D-Link7/vuln_92/92.mdexploit
- https://www.dlink.com/product
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