CVE-2026-13539
High
Description
A vulnerability was identified in Wavlink WL-NU516U1-A M16U1_V240425. The impacted element is the function sub_407504 of the file /cgi-bin/wireless.cgi of the component POST Parameter Handler. Such manipulation of the argument Guest_ssid leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used. It is suggested to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
SeverityHigh
CVSS8.8
Exploit probability—
ProductWavlink Wl-nu516u1-a
PublishedJun 29, 2026
First seenJun 29, 2026
Weakness typeCWE-121CWE-121CWE-119Memory buffer bounds error
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| wavlink wl-nu516u1-a | M16U1_V240425 | — |
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