CVE-2026-2567— Wavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow
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I. Basic Information for CVE-2026-2567
Vulnerability Information
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Vulnerability Title
Wavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/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 缓冲区错误漏洞
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版本存在缓冲区错误漏洞，该漏洞源于对文件/cgi-bin/nas.cgi中参数User1Passwd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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Wavlink | WL-NU516U1 | 20251208 | cpe:2.3:o:wavlink:wl-nu516u1_firmware:*:*:*:*:*:*:*:* |
II. Public POCs for CVE-2026-2567
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Wavlink · 2026-02-16 · 8 CVEs total
| CVE-2026-2566 | 7.2 HIGH | Wavlink WL-NU516U1 adm.cgi sub_406194 stack-based overflow |
| CVE-2026-2565 | 6.6 MEDIUM | Wavlink WL-NU516U1 adm.cgi sub_40785C stack-based overflow |
| CVE-2026-2530 | 6.3 MEDIUM | Wavlink WL-WN579A3 wireless.cgi AddMac command injection |
| CVE-2026-2529 | 6.3 MEDIUM | Wavlink WL-WN579A3 wireless.cgi DeleteMac command injection |
| CVE-2026-2528 | 6.3 MEDIUM | Wavlink WL-WN579A3 wireless.cgi Delete_Mac_list command injection |
| CVE-2026-2527 | 6.3 MEDIUM | Wavlink WL-WN579A3 login.cgi command injection |
| CVE-2026-2526 | 6.3 MEDIUM | Wavlink WL-WN579A3 wireless.cgi multi_ssid command injection |
IV. Related Vulnerabilities
Same product: WL-NU516U1
- CVE-2026-4861
Wavlink WL-NU516U1 nas.cgi ftext stack-based overflow - CVE-2026-4166
Wavlink WL-NU516U1 login.cgi sub_404F68 cross site scripting - CVE-2026-3662
Wavlink WL-NU516U1 adm.cgi usb_p910 command injection - CVE-2026-3661
Wavlink WL-NU516U1 adm.cgi ota_new_upgrade command injection - CVE-2026-3613
Wavlink WL-NU516U1 login.cgi sub_401A0C stack-based overflow
Same vendor: Wavlink
- CVE-2026-8230
Wavlink NU516U1 login.cgi sys_login1 os command injection - CVE-2026-8229
Wavlink NU516U1 wireless.cgi WifiBasic os command injection - CVE-2026-8228
Wavlink NU516U1 wireless.cgi advance os command injection - CVE-2026-8227
Wavlink NU516U1 adm.cgi wzdapMesh os command injection - CVE-2026-8192
Wavlink NU516U1 adm.cgi wzdap os command injection
Same weakness: CWE-121
- CVE-2026-8258
Squirrel sqstdstring.cpp validate_format stack-based overflo - CVE-2026-8234
EFM ipTIME A8004T WifiBasicSet formWifiBasicSet stack-based - CVE-2026-6665
PgBouncer buffer overflow in SCRAM - CVE-2026-41509
Integer underflow in crypto_sign_open() leads to buffer over - CVE-2026-8138
Tenda CX12L SetPptpServerCfg” formSetPPTPServer stack-based
V. Comments for CVE-2026-2567
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