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CVE-2026-2567

Wavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow

Published: Feb 16, 2026Updated: Feb 18, 2026 Sources: CVE List NVD BDUCWE-119
NVD MITRE
7.2CVSSHIGH
EPSS Score
0.7%
Top 53.2%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

A vulnerability was detected in Wavlink WL-NU516U1 20251208. This vulnerability affects the function sub_401218 of the file /cgi-bin/nas.cgi. Performing a manipulation of the argument User1Passwd results in stack-based buffer overflow. The attack may be initiated remotely. The exploit is now public and may be used.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-119CWE-121CWE-787

Affected Products

wl-nu516u1 firmwarewavlinkNetworking Infrastructure
WL-NU516U1WavlinkNetworking Infrastructure
WL-NU516U1WAVLINK TECHNOLOGY Ltd.
Embedded
Networking Infrastructure / router-switch
wavlinkcommercialCNNetworking Infrastructureaka wavlink
wavlink technology ltd.commercialCNNetworking Infrastructureaka wavlink

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/nas.cgi_User1Passwd.md
github.com
https://vuldb.com/?ctiid.346174
vuldb.com
https://vuldb.com/?id.346174
vuldb.com
and 1 more references View all →

Timeline

Published
Feb 16, 2026
Last Updated
Feb 18, 2026

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