High 7.2Published Mar 5, 2026

CVE-2026-3613Wavlink WL-NU516U1 login.cgi sub_401A0C stack-based overflow

Updated under an hour ago (Oct 27, 2026, 5:00 AM ET)

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It affects Wavlink WL-NU516U1. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Wavlink WL-NU516U1

Exploited in the last 30 days

A vulnerability was identified in Wavlink WL-NU516U1 V240425. This vulnerability affects the function sub_401A0C of the file /cgi-bin/login.cgi. Such manipulation of the argument ipaddr leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.

CVSS: 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Weakness (CWE): CWE-121, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Analyzed
Record last updated: Mar 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Wavlink WL-NU516U1 wavlink:wl-nu516u1_firmware	V240425	CNA record
wavlink wl-nu516u1_firmware wavlink:wl-nu516u1_firmware	m16u1_v240425	NVD

References

References

https://vuldb.com/?id.349221	vdb-entry, technical-description, third-party-advisory
https://vuldb.com/?ctiid.349221	signature, permissions-required, vdb-entry
https://vuldb.com/?submit.755341	third-party-advisory, vdb-entry
https://github.com/Wlz1112/WAVLINK-NU516-V240425/blob/main/ipaddr_Stack%20Buffer%20Overflow.md	exploit, third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.