CVE-2025-10959

Wavlink NU516U1 firewall.cgi sub_401778 command injection

HIGH
8.8
CVSS Score
Published: September 25, 2025 at 05:32 PM UTC
Updated: October 11, 2026 at 08:10 PM UTC
1 product affected across 1 vendorWl NU516U1 Firmware· also runs on 1 platform

Using NU516U1 by Wavlink?

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Severity
HIGH8.8
Exploit prediction
EPSS 7%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

wavlink-wl-nu516u1 (same device)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.325827
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.325827
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.652769
RelatedExploitThird Party Advisory
Source: cverecord
https://github.com/panda666-888/vuls/blob/main/wavlink/nu516u1/DMZ.md

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-77CWE-74

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