CVE-2026-71991: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in MSI Radix AXE6600
A command injection vulnerability exists in the MSI Radix AXE6600 router firmware version v781521 within the TelnetSSH function used for Telnet configuration. This flaw allows remote attackers to execute arbitrary OS commands with root privileges via the Telnet interface. The vulnerability has a critical severity with a CVSS 4.0 score of 9.3. No patch or official remediation guidance has been provided yet.
AI Analysis
Technical Summary
CVE-2026-71991 is an OS command injection vulnerability in the MSI Radix AXE6600 router firmware version v781521. The issue resides in the TelnetSSH function that handles Telnet configuration, permitting unauthenticated remote attackers to inject and execute arbitrary commands on the underlying system with root privileges. This vulnerability enables full system compromise through the Telnet interface. The CVSS 4.0 vector indicates network attack vector, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary commands on the affected device with root privileges, leading to complete system compromise. This can result in unauthorized control over the router, potentially affecting network security and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the Telnet interface and disable Telnet services if possible to reduce exposure.
CVE-2026-71991: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in MSI Radix AXE6600
Description
A command injection vulnerability exists in the MSI Radix AXE6600 router firmware version v781521 within the TelnetSSH function used for Telnet configuration. This flaw allows remote attackers to execute arbitrary OS commands with root privileges via the Telnet interface. The vulnerability has a critical severity with a CVSS 4.0 score of 9.3. No patch or official remediation guidance has been provided yet.
CVSS v4.0
Score 9.3critical
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-71991 is an OS command injection vulnerability in the MSI Radix AXE6600 router firmware version v781521. The issue resides in the TelnetSSH function that handles Telnet configuration, permitting unauthenticated remote attackers to inject and execute arbitrary commands on the underlying system with root privileges. This vulnerability enables full system compromise through the Telnet interface. The CVSS 4.0 vector indicates network attack vector, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. No vendor advisory or patch information is currently available.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary commands on the affected device with root privileges, leading to complete system compromise. This can result in unauthorized control over the router, potentially affecting network security and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the Telnet interface and disable Telnet services if possible to reduce exposure.
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: 6a77c23dbf8831d5396227f4
Added to database: 08/08/2026, 23:56:45 UTC
Last enriched: 08/09/2026, 00:11:04 UTC
Last updated: 08/09/2026, 00:11:04 UTC
Views: 19
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