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CVE-2026-2565— Wavlink WL-NU516U1 adm.cgi sub_40785C stack-based overflow

CVSS 6.6 · Medium EPSS 0.05% · P15
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I. Basic Information for CVE-2026-2565

Vulnerability Information
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Vulnerability Title
Wavlink WL-NU516U1 adm.cgi sub_40785C stack-based overflow
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
WAVLINK WL-NU516U1 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WAVLINK WL-NU516U1是中国睿因（WAVLINK）公司的一款无线打印服务器。 WAVLINK WL-NU516U1 20251208版本存在安全漏洞，该漏洞源于对文件/cgi-bin/adm.cgi中参数time_zone的错误操作，可能导致栈缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
WavlinkWL-NU516U1 20251208 cpe:2.3:o:wavlink:wl-nu516u1_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-2565

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III. Intelligence Information for CVE-2026-2565

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Same Patch Batch · Wavlink · 2026-02-16 · 8 CVEs total

CVE-2026-25677.2 HIGHWavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow
CVE-2026-25667.2 HIGHWavlink WL-NU516U1 adm.cgi sub_406194 stack-based overflow
CVE-2026-25306.3 MEDIUMWavlink WL-WN579A3 wireless.cgi AddMac command injection
CVE-2026-25296.3 MEDIUMWavlink WL-WN579A3 wireless.cgi DeleteMac command injection
CVE-2026-25286.3 MEDIUMWavlink WL-WN579A3 wireless.cgi Delete_Mac_list command injection
CVE-2026-25276.3 MEDIUMWavlink WL-WN579A3 login.cgi command injection
CVE-2026-25266.3 MEDIUMWavlink WL-WN579A3 wireless.cgi multi_ssid command injection

IV. Related Vulnerabilities

Same product: WL-NU516U1
Same vendor: Wavlink
Same weakness: CWE-121

V. Comments for CVE-2026-2565

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