Cyber Posture

CVE-2026-8229

MediumPublic PoC

Published: 10 May 2026

Published
10 May 2026
Modified
12 May 2026
KEV Added
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Patch
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CVSS Score 6.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
EPSS Score 0.0084 74.9th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-8229 is a medium-severity Command Injection (CWE-77) vulnerability in Wavlink Wl-Nu516U1 Firmware. Its CVSS base score is 6.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 25.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique.
Threat & Defense Details

Likely Mitigating ControlsAI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
Why these techniques?

Remote OS command injection in public-facing CGI script directly enables T1190 exploitation of the web interface and T1059.004 Unix shell command execution on the device.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

A vulnerability was detected in Wavlink NU516U1 240425. The affected element is the function WifiBasic of the file /cgi-bin/wireless.cgi. Performing a manipulation of the argument AuthMethod/EncrypType results in os command injection. Remote exploitation of the attack is possible. The exploit…

more

is now public and may be used. The vendor was contacted early about this disclosure.

Deeper analysisAI

Automated synthesis unavailable for this CVE.

Details

CWE(s)
CWE-77CWE-78

Affected Products

wavlink
wl-nu516u1 firmware
m16u1_v240425

References