CVE-2025-9149Public exploitNetwork attack vector

Authenticated command execution via Guest_ssid injection

Published Aug 19, 2025 · Updated Aug 19, 2025

Command injection in Wavlink WL-NU516U1 M16U1_V240425 allows remote authenticated users to execute operating-system commands. In /cgi-bin/wireless.cgi, sub_4032E4 accepts the POST parameter Guest_ssid and passes it through sub_407504 into a string executed by system without neutralizing shell syntax. Access to the management interface with low privileges is required; injected commands run on the print-server appliance and can alter its files, processes, or operation.

CVSS severity6.3
Medium
EPSS probability5.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Wavlink WL-NU516U1 M16U1_V240425 allows remote authenticated users to execute operating-system commands. In /cgi-bin/wireless.cgi, sub_4032E4 accepts the POST parameter Guest_ssid and passes it through sub_407504 into a string executed by system without neutralizing shell syntax. Access to the management interface with low privileges is required; injected commands run on the print-server appliance and can alter its files, processes, or operation.

The record

CVE
CVE-2025-9149
Published
Aug 19, 2025
Updated
Aug 19, 2025
Vendor
Wavlink
Product
WL-NU516U1
Classifications
CWE-77, CWE-74, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=M16U1_V240425

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wavlink · WL-NU516U1version=M16U1_V240425

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
2.1VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.5VulDB CNAAV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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