VDB-362341 · Submit #800728 · CVE-2026-8189

Wavlink NU516U1 M16U1_V240425 /cgi-bin/adm.cgi wzdrepeater wlan_bssid/sel_Automode/sel_EncrypTyp os command injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.7	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Wavlink NU516U1 M16U1_V240425. It has been rated as critical. Affected by this issue is the function wzdrepeater of the file /cgi-bin/adm.cgi. This manipulation of the argument wlan_bssid/sel_Automode/sel_EncrypTyp causes os command injection. This vulnerability is handled as CVE-2026-8189. The attack can be initiated remotely. Additionally, an exploit exists. The vendor was contacted early about this disclosure.

Detailsinfo

A vulnerability classified as critical was found in Wavlink NU516U1 M16U1_V240425. Affected by this vulnerability is the function wzdrepeater of the file /cgi-bin/adm.cgi. The manipulation of the argument wlan_bssid/sel_Automode/sel_EncrypTyp with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-8189. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1202 for this issue.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-28916). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Wavlink

Name

NU516U1

Version

M16U1_V240425

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/08/2026 Advisory disclosed
05/08/2026 +0 days VulDB entry created
05/09/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2026-8189 (🔒)
GCVE (CVE): GCVE-0-2026-8189
GCVE (VulDB): GCVE-100-362341
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/08/2026 21:57
Updated: 05/09/2026 21:28
Changes: 05/08/2026 21:57 (57), 05/09/2026 21:28 (1)
Complete: 🔍
Submitter: Ziyue Xie
Cache ID: 216::103

Submitinfo

Accepted

Submit #800728: Wavlink NU516U1 M16U1_V240425 Command Injection (by Ziyue Xie)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.