CVE-2026-15513Public exploitNetwork attack vector

Authenticated command execution via stored lan_ip injection

Published Jul 12, 2026 · Updated Jul 12, 2026

OS command injection in Wavlink WL-NU516U1 firmware 260515 allows remote authenticated users to execute commands through lan_ip. The adm.cgi page=lan handler stores lan_ip unchanged in UCI; page=openDHCP then inserts it with sprintf into an ifconfig command passed to system(). Low-privileged management access is sufficient, and shell separators execute commands with the CGI process's privileges.

CVSS severity6.3
Medium
EPSS probability1.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Wavlink WL-NU516U1 firmware 260515 allows remote authenticated users to execute commands through lan_ip. The adm.cgi page=lan handler stores lan_ip unchanged in UCI; page=openDHCP then inserts it with sprintf into an ifconfig command passed to system(). Low-privileged management access is sufficient, and shell separators execute commands with the CGI process's privileges.

The record

CVE
CVE-2026-15513
Published
Jul 12, 2026
Updated
Jul 12, 2026
Vendor
Wavlink
Product
WL-NU516U1 Firmware
Classifications
CWE-78, CWE-77, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 12, 2026Record 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=260515

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wavlink · WL-NU516U1 Firmwareversion=260515

Published CVSS scores

2.1VulDBCVSS: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
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.004Unix 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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