What is CVE-2026-4193?

CVE-2026-4193 is a high-severity vulnerability in D-Link Dir-823g, classified under Incorrect Privilege Assignment. CVSS score: 7.3/10. Published 2026-03-16.

How severe is CVE-2026-4193?

High severity. CVSS v3 base score is 7.3 out of 10.

Privilege escalation in D-Link Dir-823g

CVE-2026-4193

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.

EPSS: 0.008 (53.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

D-link Dir-823g — versions 1.0.2B05
Dlink Dir-823g
Dlink Dir-823g_firmware — versions 1.0.2b05

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
cna@vuldb.com (related, Exploit, Third Party Advisory)
cna@vuldb.com (Exploit, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2026-4193?: CVE-2026-4193 is a high-severity vulnerability in D-Link Dir-823g, classified under Incorrect Privilege Assignment. CVSS score: 7.3/10. Published 2026-03-16.
How severe is CVE-2026-4193?: High severity. CVSS v3 base score is 7.3 out of 10.