CVE Tools
Sign in

CVE-2026-2565

Wavlink WL-NU516U1 adm.cgi sub_40785C stack-based overflow

Published: Feb 16, 2026Updated: Feb 18, 2026 Sources: CVE List NVD BDUCWE-119
NVD MITRE
6.6CVSSMEDIUM
EPSS Score
0.8%
Top 49.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A weakness has been identified in Wavlink WL-NU516U1 20251208. Affected by this issue is the function sub_40785C of the file /cgi-bin/adm.cgi. This manipulation of the argument time_zone causes stack-based buffer overflow. The attack can be initiated remotely. The attack is considered to have high complexity. The exploitation is known to be difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-119CWE-121

Affected Products

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

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://vuldb.com/?id.346172
vuldb.com
https://vuldb.com/?ctiid.346172
vuldb.com
https://vuldb.com/?submit.751133
vuldb.com
and 1 more references View all →

Timeline

Published
Feb 16, 2026
Last Updated
Feb 18, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-2565 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows