Cyber Resilience

CVE-2026-8229

LowPublic PoC

Published: 10 May 2026

Published
10 May 2026
Modified
12 May 2026
KEV Added
—
Patch
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CVSS Score v4 2.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0494 91.1th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2026-8229 is a low-severity Command Injection (CWE-77) vulnerability in Wavlink Wl-Nu516U1 Firmware. Its CVSS base score is 2.1 (Low).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 8.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-77CWE-78

Related Threats

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 v19.0

CVEs Like This One

CVE-2026-8192Same product: Wavlink Wl-Nu516U1
CVE-2026-8188Same product: Wavlink Wl-Nu516U1
CVE-2026-8230Same product: Wavlink Wl-Nu516U1
CVE-2026-8189Same product: Wavlink Wl-Nu516U1
CVE-2026-8227Same product: Wavlink Wl-Nu516U1
CVE-2026-8228Same product: Wavlink Wl-Nu516U1
CVE-2026-8191Same product: Wavlink Wl-Nu516U1
CVE-2026-8190Same product: Wavlink Wl-Nu516U1
CVE-2026-3662Same product: Wavlink Wl-Nu516U1
CVE-2026-3661Same product: Wavlink Wl-Nu516U1

Affected Assets

wavlink
wl-nu516u1 firmware
m16u1_v240425

Mitigating Controls

Likely Mitigating Controls AI

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.

References