Vulnerability · Published May 9, 2026 · Assigned by VulDB

CVE-2026-8191Wavlink NU516U1 adm.cgi wifi_region os command injection

Medium 6.3

In plain English

A medium-severity OS command injection in NU516U1 from Wavlink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 8.7% (higher than 95% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)8.7%top 4.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was identified in Wavlink NU516U1 M16U1_V240425. This affects the function wifi_region of the file /cgi-bin/adm.cgi. Such manipulation of the argument skiplist1/skiplist2 leads to os command injection. The attack can be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.

Affected products (as reported)

Vendor	Product	Versions
Wavlink	NU516U1	M16U1_V240425

Weakness: CWE-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-362343 | Wavlink NU516U1 adm.cgi wifi_region os command injection vdb-entry, technical-description
VDB-362343 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #800730 | Wavlink NU516U1 M16U1_V240425 Command Injection third-party-advisory
https://github.com/wudipjq/my_vuln/blob/main/Wavlink/vuln_4/4.md exploit