CVE-2026-5004— Wavlink WL-WN579X3-C UPNP firewall.cgi sub_4019FC stack-based overflow
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I. Basic Information for CVE-2026-5004
Vulnerability Information
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Vulnerability Title
Wavlink WL-WN579X3-C UPNP firewall.cgi sub_4019FC stack-based overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was determined in Wavlink WL-WN579X3-C 231124. This impacts the function sub_4019FC of the file /cgi-bin/firewall.cgi of the component UPNP Handler. Executing a manipulation of the argument UpnpEnabled can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. 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:L/PR:L/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-WN579X3-C 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wavlink WL-WN579X3-C是中国睿因（Wavlink）公司的一款无线网络扩展器。 Wavlink WL-WN579X3-C 231124版本存在安全漏洞，该漏洞源于对参数UpnpEnabled的错误操作，可能导致基于栈的缓冲区溢出。
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-WN579X3-C | 231124 | cpe:2.3:o:wavlink:wl-wn579x3-c_firmware:*:*:*:*:*:*:*:* |
II. Public POCs for CVE-2026-5004
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 10074 chars
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III. Intelligence Information for CVE-2026-5004
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- Submit #779149: Wavlink WL-WN579X3-C V231124 Stack-based Buffer Overflowthird-party-advisory
- CVE-2026-5004 Wavlink WL-WN579X3-C UPNP firewall.cgi sub_4019FC stack-based overflowvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-5004
IV. Related Vulnerabilities
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Same weakness: CWE-121
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V. Comments for CVE-2026-5004
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