CVE-2026-3613

Name: CVE-2026-3613
Creator: NVD / NIST
Published: 2026-03-06T02:15:51.793+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.3/10EPSS 0.71%

Last modified Jun 17, 2026

CVE-2026-3613 is a high-severity vulnerability rated 7.3/10 on the CVSS scale. A vulnerability was identified in Wavlink WL-NU516U1 V240425. This vulnerability affects the function sub_401A0C of the file /cgi-bin/login.cgi. EPSS estimates a 0.71% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.2/10

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

CVSS 4.0

7.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.71%

48.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Wavlink	Wl-Nu516u1 Firmware	m16u1_v240425

References

https://github.com/Wlz1112/WAVLINK-NU516-V240425/blob/main/ipaddr_Stack%20Buffer%20Overflow.mdExploit, Third Party Advisory
https://vuldb.com/?ctiid.349221Permissions Required, VDB Entry
https://vuldb.com/?id.349221Third Party Advisory, VDB Entry
https://vuldb.com/?submit.755341Third Party Advisory, VDB Entry

Timeline

Published: Mar 6, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-3613?

How severe is CVE-2026-3613?

CVE-2026-3613 has a CVSS score of 7.3/10 (HIGH severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.

How do I fix CVE-2026-3613?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-3613?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST