CVE-2025-5850 Tenda AC15 HTTP POST Request SetLEDCf formsetschedled buffer overflow

High 8.7 Published Updated

Remote attackers can trigger a buffer overflow in the Tenda AC15 router's LED scheduling handler, potentially leading to code execution or service disruption.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2025-5850?

CVE-2025-5850 is a high-severity memory corruption vulnerability in Tenda Ac15 Firmware, published on 8 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was found in Tenda AC15 15.03.05.19_multi. It has been declared as critical. This vulnerability affects the function formsetschedled of the file /goform/SetLEDCf of the component HTTP POST Request Handler. The manipulation of the argument Time leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-120, CWE-119

Which versions are affected by CVE-2025-5850?

It affects 1 product.

Products include Tenda Ac15 Firmware.

How do I fix CVE-2025-5850?

No fix has been published for CVE-2025-5850 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2025-5850 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5850 exists.

All Tenda Ac15 Firmware vulnerabilities

Sources

Also known as GHSA-4287-9xx6-3794.

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