CVE-2026-3703: Wavlink NU516U1 login.cgi sub_401A10 out-of-bounds write
A flaw has been found in Wavlink NU516U1 251208. This affects the function sub401A10 of the file /cgi-bin/login.cgi. Executing a manipulation of the argument ipaddr can lead to out-of-bounds write. The attack may be performed from remote. The exploit has been published and may be used. Upgrading the affected component is recommended. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-3703?
CVE-2026-3703 is classified as a high-severity vulnerability due to its potential to allow remote attackers to perform out-of-bounds writes.
How do I fix CVE-2026-3703?
To fix CVE-2026-3703, update the Wavlink NU516U1 firmware to the latest version provided by the manufacturer.
What types of attacks can exploit CVE-2026-3703?
CVE-2026-3703 can be exploited via remote attacks that manipulate the 'ipaddr' argument to trigger an out-of-bounds write.
What are the potential impacts of CVE-2026-3703?
The potential impacts include system crashes, unauthorized access, or execution of arbitrary code on the affected device.
Which devices are affected by CVE-2026-3703?
CVE-2026-3703 specifically affects the Wavlink NU516U1 model.