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CVE

CWE

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CVE-2026-5004

Published: Mar 28, 2026

Modified: Mar 30, 2026

PUBLISHED

CVSS v3.1

8.8

HIGH

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.

Vendor	Product	Versions
Wavlink	WL-WN579X3-C	affected `231124`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

VDB-353891 | Wavlink WL-WN579X3-C UPNP firewall.cgi sub_4019FC stack-based overflow

vdb-entry

technical-description

VDB-353891 | CTI Indicators (IOB, IOC, IOA)

signature

permissions-required

Submit #779149 | Wavlink WL-WN579X3-C V231124 Stack-based Buffer Overflow

third-party-advisory

https://github.com/Litengzheng/vul_db/blob/main/WL-WN579X3-C/vul_200/README.md

exploit

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