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D-Link DIR-825 Rev B <= 2.10b02 NULL Pointer Dereference Vulnerability CVE-2021-29296

CVSSv3 Score
Vulnerability description

D-Link DIR-825 Rev. B devices are prone to a NULL pointer dereference vulnerability.

Risk description

The vulnerability could be triggered by sending HTTP request with URL /vct_wan. Thus, the sbin/httpd would invoke the strchr function and take NULL as a first argument, which finally leads to the segmentation fault. The vulnerability could let a remote malicious user cause a denial of service.


No solution was made available by the vendor. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one. The DIR-825 revision B model has entered the end-of-life process by the time these vulnerabilities were disclosed and therefore the vendor is unable to provide support or development to mitigate them.

Not available
Detectable with
Network Scanner
Scan engine
Exploitable with Sniper
CVE Published
Aug 10, 2021
Detection added at
Software Type
Not available
Not available
Not available