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CVE-2026-13538— Wavlink WL-NU516U1-A POST Parameter wireless.cgi sub_401D68 command injection

Quick assessment

Affected
Wavlink WL-NU516U1-A
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WAVLINK wl-nu516u1-a是中国WAVLINK公司的一款高性能无线路由器。 Wavlink WL-NU516U1-A M16U1_V240425版本存在安全漏洞，该漏洞源于POST Parameter Handler组件中文件/cgi-bin/wireless.cgi的函数sub_401D68对参数SSID2G2/SSID5G2/AuthMethod2/WPAPSK12的操作，导致命令注入，攻击者可能远程利用此漏洞。

CVSS 6.3 · Medium EPSS 2.18% · P82

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Wavlink WL-NU516U1-A M16U1_V240425 affected
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I. Basic Information for CVE-2026-13538

Vulnerability Information
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Vulnerability Title
Wavlink WL-NU516U1-A POST Parameter wireless.cgi sub_401D68 command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in Wavlink WL-NU516U1-A M16U1_V240425. The affected element is the function sub_401D68 of the file /cgi-bin/wireless.cgi of the component POST Parameter Handler. This manipulation of the argument SSID2G2/SSID5G2/AuthMethod2/WPAPSK12 causes command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
wavlink wl-nu516u1-a 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WAVLINK wl-nu516u1-a是中国WAVLINK公司的一款高性能无线路由器。 Wavlink WL-NU516U1-A M16U1_V240425版本存在安全漏洞，该漏洞源于POST Parameter Handler组件中文件/cgi-bin/wireless.cgi的函数sub_401D68对参数SSID2G2/SSID5G2/AuthMethod2/WPAPSK12的操作，导致命令注入，攻击者可能远程利用此漏洞。
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-A M16U1_V240425 cpe:2.3:a:wavlink:wl-nu516u1-a:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-13538

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III. Intelligence Information for CVE-2026-13538

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Proof of Concept for CVE-2026-13538 (2)

Other References for CVE-2026-13538 (1)

IV. Related Vulnerabilities

Same product: WL-NU516U1-A
Same vendor: Wavlink
Same weakness: CWE-77

V. Comments for CVE-2026-13538

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