CVE-2026-13539

Wavlink WL-NU516U1-A POST Parameter wireless.cgi sub_407504 stack-based overflow

HIGH
8.8
CVSS Score
Published: June 29, 2026 at 05:30 AM UTC
Updated: October 25, 2026 at 05:10 PM UTC
2 products affected across 1 vendorwl-nu516u1-aWL-NU516U1

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Severity
HIGH8.8
Exploit prediction
EPSS 0.9%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-121CWE-119

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