Buffer overflow in Wavlink Quantum D2g
CVE-2025-5408
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.001
Affected products
- Wavlink Quantum D2g — versions V1410_240222
- Wavlink Quantum D3g — versions V1410_240222
- Wavlink Wl-Wn530g3a — versions V1410_240222
- Wavlink Wl-Wn530hg3 — versions V1410_240222
- Wavlink Wl-Wn532a3 — versions V1410_240222
- Wavlink Wl-Wn576k1 — versions V1410_240222
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- github.com/CH13hh/tmp_store_cc/blob/main/wavlink/1.md (exploit, broken-link)
Frequently asked questions
- What is CVE-2025-5408?
- CVE-2025-5408 is a critical-severity vulnerability in Wavlink Quantum D2g, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2025-06-01.
- How severe is CVE-2025-5408?
- Critical severity. CVSS v3 base score is 9.8 out of 10.