Is CVE-2026-91001 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-91001?

CVE-2026-91001 has a CVSS v3 severity of CRITICAL (9.9).

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CVE-2026-91001

Description

A security flaw has been discovered in D-Link DI-8400 16.07. This affects the function ddns_asp of the file /ddns.asp of the component DDNS Configuration. Performing a manipulation of the argument serv/user/host/wild/mx/bmx/cust/ip results in stack-based buffer overflow. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.