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

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Summary

CVECVE-2026-3704
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-08 04:15:59 UTC
Updated2026-04-29 01:00:01 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 2 LOW from [email protected]

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-74 | CWE-77 | CWE-77 Command Injection | CWE-74 Injection

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary2LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/C...
4.0CNADECLARED5.1MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
3.1[email protected]Primary7.2HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary4.7MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED4.7MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
3.0CNADECLARED4.7MEDIUMCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
2.0[email protected]Secondary5.8AV:N/AC:L/Au:M/C:P/I:P/A:P
2.0CNADECLARED5.8AV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:OF/RC:C

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Wavlink Wl-nu516u1 - All All All
Operating System Wavlink Wl-nu516u1 Firmware 251208 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wavlink NU516U1 affected 251208 Not specified

References

ReferenceSourceLinkTags
dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-02-27-2fcf6ae-mt7628-sq... [email protected] dl.wavlink.com Broken Link
github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/wavlink_DMZ.md [email protected] github.com Exploit, Third Party Advisory
github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/wavlink_DMZ.md [email protected] github.com Exploit, Third Party Advisory
vuldb.com [email protected] vuldb.com Third Party Advisory, VDB Entry
vuldb.com [email protected] vuldb.com Third Party Advisory, VDB Entry
vuldb.com [email protected] vuldb.com Permissions Required, VDB Entry
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: haimianbaobao (VulDB User) (en)

CNA: VulDB (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-07T00:00:00.000ZAdvisory disclosed
CNA2026-03-07T01:00:00.000ZVulDB entry created
CNA2026-03-07T10:01:33.000ZVulDB entry last update
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