CVE-2026-3613 — HIGH (7.2) — White Hats Nepal

Vulnerability Description

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 Score

7.2

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Wavlink	Wl-Nu516U1 Firmware	m16u1_v240425
Wavlink	Wl-Nu516U1	-

Related Weaknesses (CWE)

CWE-121 CWE-119

References

https://github.com/Wlz1112/WAVLINK-NU516-V240425/blob/main/ipaddr_Stack%20BufferExploitThird Party Advisory
https://vuldb.com/?ctiid.349221Permissions RequiredVDB Entry
https://vuldb.com/?id.349221Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.755341Third Party AdvisoryVDB Entry

FAQ

What is CVE-2026-3613?

CVE-2026-3613 is a vulnerability with a CVSS score of 7.2 (HIGH). 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...

How severe is CVE-2026-3613?

CVE-2026-3613 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-3613?

Check the references section above for vendor advisories and patch information. Affected products include: Wavlink Wl-Nu516U1 Firmware, Wavlink Wl-Nu516U1.