What’s Vulnerable › Vulnerabilities

CVE-2026-4193: D-Link DIR-823G goahead UpdateClientInfo access control

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-16 · updated 2026-06-17
• Weakness: CWE-266

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.

Affected products

• D-Link DIR-823G: 1.0.2b05

References

• https://github.com/wudipjq/my_vuln/blob/main/D-Link7/vuln_91/91.md
• https://github.com/wudipjq/my_vuln/blob/main/D-Link7/vuln_92/92.md
• https://vuldb.com/?ctiid.351105
• https://vuldb.com/?id.351105
• https://vuldb.com/?submit.769835
• https://vuldb.com/?submit.769836
• https://vuldb.com/?submit.769837
• https://vuldb.com/?submit.769838
• https://vuldb.com/?submit.769839
• https://vuldb.com/?submit.769841
• https://www.dlink.com/

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