Is CVE-2026-2566 actively exploited?

No active exploitation of CVE-2026-2566 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-2566 be exploited remotely?

Yes. CVE-2026-2566 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-2566?

CVE-2026-2566 has a CVSS score of 7.2 (HIGH) and an EPSS exploitation probability of 0.05%.

HOME VULNERABILITIESCVE-2026-2566

HIGH

CVE-2026-2566

CWE-119Published: February 16, 2026· Updated: Feb 18, 2026

7.2

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.4th

Official Description

A security vulnerability has been detected in Wavlink WL-NU516U1 up to 130/260. This affects the function sub_406194 of the file /cgi-bin/adm.cgi. Such manipulation of the argument firmware_url leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

NVD Source

Technical Analysis

CVE-2026-2566 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.2.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.