CVE-2026-4193
HIGHDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Exploit Intelligence
Moderate risk: more likely to be exploited than 52% of all known CVEs.
References
Related Vulnerabilities
Other CWE-266 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-28000 | Critical | 9.8 | 68% | - | Fix |
| CVE-2025-27007 | Critical | 9.8 | 51% | - | - |
| CVE-2025-47539 | Critical | 9.8 | 33% | - | Fix |
| CVE-2022-20759 | High | 8.8 | 29% | - | Fix |
| CVE-2024-13106 | Medium | 5.3 | 27% | - | - |
| CVE-2024-3013 | Medium | 6.3 | 23% | - | - |
Common questions
How do I fix CVE-2026-4193?
No published fix for CVE-2026-4193 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-4193 being actively exploited?
Not that we know of. CVE-2026-4193 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.77% is the estimated probability that it will be exploited in the next 30 days. That is higher than 52% of all scored CVEs.
How severe is CVE-2026-4193?
CVE-2026-4193 has a CVSS v3 base score of 7.3, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.