Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

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

CVSS 7.3 · High EPSS 0.13% · P32
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-4193

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
D-Link DIR-823G goahead UpdateClientInfo access control
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
D-Link DIR-823G 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DIR-823G是中国友讯（D-Link）公司的一款无线路由器。 D-Link DIR-823G 1.0.2B05版本存在访问控制错误漏洞，该漏洞源于访问控制不当，可能导致权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
D-LinkDIR-823G 1.0.2B05 -

II. Public POCs for CVE-2026-4193

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-4193

请登录查看更多情报信息。

Same Patch Batch · D-Link · 2026-03-15 · 11 CVEs total

CVE-2026-41849.8 CRITICALD-Link DIR-816 goahead form2Wl5BasicSetup.cgi stack-based overflow
CVE-2026-41839.8 CRITICALD-Link DIR-816 goahead form2WlanBasicSetup.cgi stack-based overflow
CVE-2026-41829.8 CRITICALD-Link DIR-816 goahead form2Wl5RepeaterStep2.cgi stack-based overflow
CVE-2026-41819.8 CRITICALD-Link DIR-816 goahead form2RepeaterStep2.cgi stack-based overflow
CVE-2026-41888.8 HIGHD-Link DIR-619L boa formSchedule stack-based overflow
CVE-2026-41947.3 HIGHD-Link DNS-1550-04 system_mgr.cgi cgi_set_wto access control
CVE-2026-41807.3 HIGHD-Link DIR-816 goahead redirect.asp access control
CVE-2026-41976.3 MEDIUMD-Link DNS-1550-04 download_mgr.cgi RSS_Item_List command injection
CVE-2026-41966.3 MEDIUMD-Link DNS-1550-04 remote_backup.cgi cgi_set_rsync_server command injection
CVE-2026-41956.3 MEDIUMD-Link DNS-1550-04 wizard_mgr.cgi command injection

IV. Related Vulnerabilities

Same product: DIR-823G
Same vendor: D-Link
Same weakness: CWE-284

V. Comments for CVE-2026-4193

No comments yet

Leave a comment