CVE-2025-5408: Wavlink Quantum d2g

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

A vulnerability was found in WAVLINK QUANTUM D2G, QUANTUM D3G, WL-WN530G3A, WL-WN530HG3, WL-WN532A3 and WL-WN576K1 up to V1410_240222 and classified as critical. Affected by this issue is the function sys_login of the file /cgi-bin/login.cgi of the component HTTP POST Request Handler. The manipulation of the argument login_page leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Wavlink Quantum d2g: version V1410_240222 only
• Wavlink Quantum d3g: version V1410_240222 only
• Wavlink Wl-WN530G3A: version V1410_240222 only
• Wavlink Wl-WN530HG3: version V1410_240222 only
• Wavlink Wl-WN532A3: version V1410_240222 only
• Wavlink Wl-WN576K1: version V1410_240222 only

Published 2025-06-01. Last modified 2026-06-17.