CVE-2026-71990: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in MSI Radix AXE6600
CVE-2026-71990 is a critical OS command injection vulnerability in the MSI Radix AXE6600 router firmware version v781521. It exists in the TelnetSSH function used for SSH configuration, allowing remote attackers to execute arbitrary commands with root privileges on the device. This vulnerability enables full system compromise via the SSH configuration interface.
AI Analysis
Technical Summary
The MSI Radix AXE6600 router firmware version v781521 contains an OS command injection vulnerability in its TelnetSSH function. This flaw allows remote attackers to inject malicious commands through the SSH configuration interface, leading to arbitrary command execution with root-level privileges on the underlying system. The vulnerability is identified as CVE-2026-71990 with a CVSS 4.0 score of 9.3, indicating critical severity. No patch or official remediation guidance is currently provided, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation results in remote code execution with root privileges on the affected MSI Radix AXE6600 device, enabling full control over the system. This can lead to complete compromise of the router, potentially affecting network security and confidentiality.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict SSH access to trusted networks and users to reduce exposure. Monitor for updates from MSI regarding patches or mitigations.
CVE-2026-71990: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in MSI Radix AXE6600
Description
CVE-2026-71990 is a critical OS command injection vulnerability in the MSI Radix AXE6600 router firmware version v781521. It exists in the TelnetSSH function used for SSH configuration, allowing remote attackers to execute arbitrary commands with root privileges on the device. This vulnerability enables full system compromise via the SSH configuration interface.
CVSS v4.0
Score 9.3critical
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The MSI Radix AXE6600 router firmware version v781521 contains an OS command injection vulnerability in its TelnetSSH function. This flaw allows remote attackers to inject malicious commands through the SSH configuration interface, leading to arbitrary command execution with root-level privileges on the underlying system. The vulnerability is identified as CVE-2026-71990 with a CVSS 4.0 score of 9.3, indicating critical severity. No patch or official remediation guidance is currently provided, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation results in remote code execution with root privileges on the affected MSI Radix AXE6600 device, enabling full control over the system. This can lead to complete compromise of the router, potentially affecting network security and confidentiality.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict SSH access to trusted networks and users to reduce exposure. Monitor for updates from MSI regarding patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-08T23:03:19.076Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a77beb9bf8831d5395c26ea
Added to database: 08/08/2026, 23:41:45 UTC
Last enriched: 08/08/2026, 23:56:06 UTC
Last updated: 08/09/2026, 00:03:17 UTC
Views: 4
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