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CVE-2026-109109— Wavlink WL-WN530BE1-A Settings Export CGI ExportAllSettings.cgi strcpy stack-based overflow

Quick assessment

Affected
Wavlink WL-WN530BE1-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.

在 Wavlink WL-WN530BE1-A 251117 固件中发现了一个漏洞。该漏洞影响设置导出 CGI 组件中 文件的 函数。通过操纵 HTTP_COOKIE/X-Cmd 参数，可导致栈缓冲区溢出。该漏洞可被远程触发利用。相关利用代码目前已公开，可供攻击者使用。供应商已在披露早期被联系通知。

CVSS 10.0 · Critical EPSS 0.58% · P46

Affected Version Matrix 1

VendorProduct Version RangeStatus
Wavlink WL-WN530BE1-A 251117 affected
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I. Basic Information for CVE-2026-109109

Vulnerability Information
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Vulnerability Title
Wavlink WL-WN530BE1-A Settings Export CGI ExportAllSettings.cgi strcpy stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in Wavlink WL-WN530BE1-A 251117. This vulnerability affects the function strcpy of the file /cgi-bin/ExportAllSettings.cgi of the component Settings Export CGI. Performing a manipulation of the argument HTTP_COOKIE/X-Cmd results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Wavlink WL-WN530BE1-A 251117 cpe:2.3:a:wavlink:wl-wn530be1-a:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-109109

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III. Intelligence Information for CVE-2026-109109

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Other References for CVE-2026-109109 (1)

Same Patch Batch · Wavlink · 2026-10-13 · 4 CVEs total

CVE-2026-109110 10.0 CRITICAL Wavlink WL-WN592AX6 wmapd system os command injection
CVE-2026-109108 9.9 CRITICAL Wavlink WL-WN530BE1-A uploadVpn.cgi popen os command injection
CVE-2026-109107 6.5 MEDIUM Wavlink WL-WN592AX6 upload.cgi main null pointer dereference

IV. Related Vulnerabilities

Same product: WL-WN530BE1-A
Same vendor: Wavlink
Same weakness: CWE-121

V. Comments for CVE-2026-109109

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