TI-2026-03196 Aliases CVE-2026-3704 GHSA-v25j-jp29-j537

Wavlink NU516U1 Incomplete Fix CVE-2025-10959 firewall.cgi sub_405B2C command injection

LOW 32CWE-74Published 2026-03-08 · Updated 2026-03-10

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: Low · Low · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

A vulnerability has been found in Wavlink NU516U1 251208. This vulnerability affects the function sub_405B2C of the file /cgi-bin/firewall.cgi of the component Incomplete Fix CVE-2025-10959. The manipulation leads to command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. It is recommended to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.05565 92nd percentileScored 2026-11-07

Public exploit Yes 2 exploit referencesTagged by NVD and the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Wavlink	NU516U1	251208	—	No fix listed	CNA

NU516U1 VendorWavlink Affected 251208 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:wavlink:wl-nu516u1_firmware:251208:::::::*	251208	Vulnerable	Wavlink
cpe:2.3:h:wavlink:wl-nu516u1:-:::::::*	not specified by NVD	Running on	Wavlink

cpe:2.3:o:wavlink:wl-nu516u1_firmware:251208:*:*:*:*:*:*:* Versions 251208 Vulnerable ·Wavlink
cpe:2.3:h:wavlink:wl-nu516u1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Wavlink

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-3704
2026-10-03 Alias added: GHSA-v25j-jp29-j537

References

Exploit 2

Patch 1

https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-02-27-2fcf6ae-mt7628-squashfs-sysupgrade.bin

TI-2026-03195 Wavlink NU516U1 login.cgi sub_401A10 out-of-bounds write CVSS 4.0CRITICAL 9.3
TI-2026-04241 Wavlink WL-NU516U1 nas.cgi ftext stack-based overflow CVSS 4.0HIGH 8.7
TI-2026-03117 Wavlink WL-NU516U1 login.cgi sub_401A0C stack-based overflow CVSS 4.0HIGH 8.6
TI-2026-03116 Wavlink WL-NU516U1 OTA Online Upgrade adm.cgi sub_405AF4 command injection CVSS 4.0HIGH 8.6
TI-2026-02231 Wavlink WL-NU516U1 firewall.cgi singlePortForwardDelete command injection CVSS 4.0HIGH 8.6
TI-2026-02193 Wavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow CVSS 4.0HIGH 8.6

See all 27 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences