High 7.3Published Mar 15, 2026

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

Updated under an hour ago (Oct 26, 2026, 3:23 PM ET)

Does this affect you?

It affects D-Link DIR-823G and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for D-Link DIR-823G

Exploited in the last 30 days

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: 7.3 HIGH (v3.1, CNA)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
Weakness (CWE): CWE-284, CWE-266
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Analyzed
Record last updated: Mar 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

D-Link DIR-823G d_link:dir_823g (from the name)	1.0.2B05	CNA record
dlink dir-823g_firmware dlink:dir-823g_firmware	1.0.2b05	NVD

References

References

https://vuldb.com/?id.351105	vdb-entry, technical-description, third-party-advisory
https://vuldb.com/?ctiid.351105	signature, permissions-required, vdb-entry
https://vuldb.com/?submit.769835	third-party-advisory, vdb-entry
https://vuldb.com/?submit.769836	third-party-advisory, vdb-entry
https://vuldb.com/?submit.769837	third-party-advisory, vdb-entry
https://vuldb.com/?submit.769838	third-party-advisory, vdb-entry
https://vuldb.com/?submit.769839	third-party-advisory, vdb-entry
https://vuldb.com/?submit.769841	third-party-advisory, vdb-entry
https://github.com/wudipjq/my_vuln/blob/main/D-Link7/vuln_91/91.md	related, exploit, third-party-advisory
https://github.com/wudipjq/my_vuln/blob/main/D-Link7/vuln_92/92.md	exploit, third-party-advisory
1–10 of 11

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.