CVE-2026-124560: D-Link DIR-878 HNAP prog.cgi GetCAPTCHAsetting heap-based overflow
A vulnerability was found in D-Link DIR-878 1.20B05. This affects the function GetCAPTCHAsetting of the file bin/prog.cgi of the component HNAP Handler. Performing a manipulation of the argument uid results in heap-based buffer overflow. The attack can be initiated remotely. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.
Affected Software
Event History
Frequently Asked Questions
Which devices are exposed to this issue?
D-Link DIR-878 devices running firmware version 1.20B05 are affected. The issue applies to products that are no longer supported by the maintainer.
Does exploitation require authentication or user interaction?
No. The vulnerability can be exploited remotely by manipulating the uid argument handled by the HNAP GetCAPTCHAsetting function, with no privileges or user interaction indicated.
Is public exploit information available?
Yes. A public proof of concept has been flagged, and the exploit has been made public.