A vulnerability, which was classified as critical, was found in Tenda G3 15.11.0.17(9502). Affected is the function modifyDhcpRule of the file /goform/modifyDhcpRule. The manipulation of the argument bindDhcpIndex leads to stack-based buffer overflow. Using CWE to declare the problem leads to CWE-121. The weakness was shared 04/25/2024. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2024-4165. It is possible to launch the attack remotely. Technical details are available. Furthermore, there is an exploit available. The exploit has been disclosed to the public and may be used. The current price for an exploit might be approx. USD $0-$5k at the moment. It is declared as proof-of-concept. The exploit is shared for download at github.com. As 0-day the estimated underground price was around $0-$5k. The vendor was contacted early about this disclosure but did not respond in any way. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

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