CVE-2026-5004

HIGH 8.8

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

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

13th

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.

CWE	CWE-121 CWE-119
Vendor	wavlink
Product	wl-wn579x3-c
Published	Mar 28, 2026
Last Updated	Mar 30, 2026

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CVSS v3 Breakdown

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

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Wavlink / WL-WN579X3-C

231124

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/353891 vuldb.com: https://vuldb.com/vuln/353891/cti vuldb.com: https://vuldb.com/submit/779149 github.com: https://github.com/Litengzheng/vul_db/blob/main/WL-WN579X3-C/vul_200/README.md

Credits

🔍 LtzHuster2 (VulDB User) VulDB