CVE-2026-71991: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in MSI Radix AXE6600
MSI Radix AXE6600 router firmware version v781521 contains a command injection vulnerability in the TelnetSSH function used for Telnet configuration that allows remote attackers to execute arbitrary commands on the affected device. Attackers can exploit this vulnerability through the Telnet configuration interface to inject malicious commands and obtain root privileges on the underlying system.
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
MSI Radix AXE6600 router firmware version v781521 contains a command injection vulnerability in the TelnetSSH function used for Telnet configuration that allows remote attackers to execute arbitrary commands on the affected device. Attackers can exploit this vulnerability through the Telnet configuration interface to inject malicious commands and obtain root privileges on the underlying system.
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: 09/08/2026, 10:52:11 UTC
Views: 112
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.