CVE-2025-10963: Wavlink NU516U1 firewall.cgi sub_4016F0 command injection

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-09-25 · updated 2026-10-11
Weakness: CWE-74

Description

A security flaw has been discovered in Wavlink NU516U1 M16U1_V240425. Affected is the function sub_4016F0 of the file /cgi-bin/firewall.cgi. The manipulation of the argument del_flag results in command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be exploited. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

Wavlink NU516U1: m16u1_v240425

References

https://github.com/panda666-888/vuls/blob/main/wavlink/nu516u1/singlePortForwardDelete.md
https://github.com/panda666-888/vuls/blob/main/wavlink/nu516u1/singlePortForwardDelete.md#poc
https://vuldb.com/?ctiid.325831
https://vuldb.com/?id.325831
https://vuldb.com/?submit.652784

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