CVE-2026-53876Network attack vector

Root command execution via undisclosed web-console input

Published Jun 17, 2026 · Updated Jun 17, 2026

OS command injection in RadiX AX6600 firmware before 781521 allows remote authenticated users to execute commands with root privileges. The public advisory identifies the web console as the reachable component but does not disclose the vulnerable parameter, handler, or command-building operation. Administrator access to the web console is required, and successful exploitation grants full command execution on the router operating system.

CVSS severity8.6
High
EPSS probability1.79%
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 RadiX AX6600 firmware before 781521 allows remote authenticated users to execute commands with root privileges. The public advisory identifies the web console as the reachable component but does not disclose the vulnerable parameter, handler, or command-building operation. Administrator access to the web console is required, and successful exploitation grants full command execution on the router operating system.

The record

CVE
CVE-2026-53876
Published
Jun 17, 2026
Updated
Jun 17, 2026
Vendor
Micro-Star International Co., Ltd.
Product
RadiX AX6600 WiFi 6 Tri-Band Gaming Router
Classifications
CWE-78, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 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=firmware versions prior to v781521

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Micro-Star International Co., Ltd. · RadiX AX6600 WiFi 6 Tri-Band Gaming Routerversion=firmware versions prior to v781521

Published CVSS scores

7.2JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.6JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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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