Vulnerability record · CVE-2026-2615 · published 17 February 2026

CVE-2026-2615: Wavlink wl-nu516u1 firmware injection vulnerability

Wavlink · Wl Nu516u1 Firmware

A flaw has been found in Wavlink WL-NU516U1 up to 20251208. The affected element is the function singlePortForwardDelete of the file /cgi-bin/firewall.cgi. Executing a manipulation of the argument del_flag can lead to command injection. The attack may be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

7.3 CVSS 4.0 High EPSS 7.8% · top 5.5% CWE-74 · InjectionCWE-77 · Command injection

7.3CVSS 4.0 base score, v2 8.3

7.8%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

5References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Wl Nu516u1 Firmware Wavlink

References

Link	Tags
https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/singlePortForwardDelete.md	ExploitThird Party Advisory
https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/singlePortForwardDelete.md#exp	Exploit
https://vuldb.com/?ctiid.346265	Permissions RequiredVDB Entry
https://vuldb.com/?id.346265	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.751047	Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-2615), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.