High severity · published Feb 17, 2026
CVE-2026-2615
Wavlink WL-NU516U1 firewall.cgi singlePortForwardDelete command injection
7.2
CVSS
13.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)13.4% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WL
WL-NU516U1 · Wavlink
20251208 · source: vendor
WF
Wl-nu516u1 Firmware · Wavlink
through 2025-12-08 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2615
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2615
Exploit
https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/singlePortForwardDelete.md
Exploit
https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/singlePortForwardDelete.md#exp
Permissions Required
https://vuldb.com/?ctiid.346265
Third Party Advisory
https://vuldb.com/?id.346265
Third Party Advisory
https://vuldb.com/?submit.751047
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