CVE-2026-8190: OS Command Injection in Wavlink NU516U1
A vulnerability was determined in Wavlink NU516U1 M16U1_V240425. Affected by this issue is the function wan of the file /cgi-bin/adm.cgi. This manipulation of the argument ppp_username/ppp_passwd/rwan_ip/rwan_mask/rwan_gateway is directly passed by the attacker/so we can control the ppp_username/ppp_passwd/rwan_ip/rwan_mask/rwan_gateway causes os command injection. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.
AI Analysis
Technical Summary
This vulnerability affects the Wavlink NU516U1 device running firmware version M16U1_V240425. The 'wan' function in /cgi-bin/adm.cgi improperly handles input parameters related to PPP credentials and WAN IP configuration, allowing an attacker to inject OS commands remotely. The flaw arises from direct use of attacker-controlled input without proper sanitization or validation. The vulnerability was publicly disclosed shortly after vendor notification, but no official fix or patch has been announced. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges or user interaction required, and low impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary OS commands on the affected device remotely. This can lead to unauthorized control over the device, potentially compromising network security and device functionality. However, the impact is rated medium due to limited confidentiality, integrity, and availability impacts as per the CVSS vector. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch has been released, users should monitor vendor communications for updates. Until a patch is available, restricting network access to the device's management interface and disabling remote administration features, if possible, may reduce exposure.
CVE-2026-8190: OS Command Injection in Wavlink NU516U1
Description
A vulnerability was determined in Wavlink NU516U1 M16U1_V240425. Affected by this issue is the function wan of the file /cgi-bin/adm.cgi. This manipulation of the argument ppp_username/ppp_passwd/rwan_ip/rwan_mask/rwan_gateway is directly passed by the attacker/so we can control the ppp_username/ppp_passwd/rwan_ip/rwan_mask/rwan_gateway causes os command injection. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the Wavlink NU516U1 device running firmware version M16U1_V240425. The 'wan' function in /cgi-bin/adm.cgi improperly handles input parameters related to PPP credentials and WAN IP configuration, allowing an attacker to inject OS commands remotely. The flaw arises from direct use of attacker-controlled input without proper sanitization or validation. The vulnerability was publicly disclosed shortly after vendor notification, but no official fix or patch has been announced. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges or user interaction required, and low impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary OS commands on the affected device remotely. This can lead to unauthorized control over the device, potentially compromising network security and device functionality. However, the impact is rated medium due to limited confidentiality, integrity, and availability impacts as per the CVSS vector. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch has been released, users should monitor vendor communications for updates. Until a patch is available, restricting network access to the device's management interface and disabling remote administration features, if possible, may reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-08T19:52:08.350Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69ff7098cbff5d8610583e8f
Added to database: 5/9/2026, 5:36:24 PM
Last enriched: 5/9/2026, 5:51:22 PM
Last updated: 5/10/2026, 5:47:59 AM
Views: 10
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