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CVE-2026-4193

D-Link DIR-823G goahead UpdateClientInfo access control

CVSS 6.9 MEDIUMEPSS 0.8%CWE-266CWE-284
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 6.9EPSS 0.8%KEV nãoPoC —Patch —
Lifecycle
15 Mar 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
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
Affected products
D-Link · DIR-823G

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