CVE-2026-5004

HIGH

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

Title source: cna

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.

References (4)

Core 4

Core References

Vdb Entry, Technical Description vdb-entry technical-description

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

https://vuldb.com/vuln/353891

Signature, Permissions Required signature permissions-required

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

https://vuldb.com/vuln/353891/cti

Third Party Advisory third-party-advisory

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

https://vuldb.com/submit/779149

Exploit exploit

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

View Exploit ZIP pw:eip

Scores

CVSS v3 8.8

EPSS 0.0069

EPSS Percentile 47.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact total

Details

CWE

CWE-119 CWE-121 CWE-787

Status published

Products (2)

Wavlink/WL-WN579X3-C 231124

wavlink/wl-wn579x3-c_firmware 231124

Published Mar 28, 2026

Tracked Since Mar 29, 2026