RCE in Wavlink Nu516u1

CVE-2025-10959

A vulnerability has been found in Wavlink NU516U1 M16U1_V240425. The affected element is the function sub_401778 of the file /cgi-bin/firewall.cgi. Such manipulation of the argument dmz_flag leads to command injection. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

EPSS: 0.066 (93.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
  • cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
  • cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
  • cna@vuldb.com (related, Exploit, Third Party Advisory)
  • cna@vuldb.com (Exploit, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2025-10959?
CVE-2025-10959 is a medium-severity vulnerability in Wavlink Nu516u1, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2025-09-25.
How severe is CVE-2025-10959?
Medium severity. CVSS v3 base score is 6.3 out of 10.
Is CVE-2025-10959 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.