CVE-2026-61376 in WAB-M1775-PS
Summary
by MITRE • 07/28/2026
ELECOM wireless LAN routers and access points devices contain an OS Command Injection vulnerability in Restore Settings. If this vulnerability is exploited, an arbitrary OS command may be executed by an attacker who can log in to the product.
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Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a critical operating system command injection flaw affecting ELECOM wireless LAN routers and access point devices that specifically manifests during the Restore Settings functionality. The vulnerability stems from insufficient input validation and sanitization within the device's web interface when processing restore configuration requests, allowing authenticated attackers with administrative login credentials to inject malicious operating system commands directly into the device's underlying shell environment.
The technical exploitation occurs when an attacker successfully authenticates to the device and navigates to the restore settings functionality, where improperly validated user input is concatenated directly into system execution calls without proper sanitization or escaping mechanisms. This design flaw enables command injection attacks that can execute arbitrary operating system commands with the privileges of the web server process, typically running with elevated system permissions. The vulnerability aligns with CWE-77 which specifically addresses command injection weaknesses in software systems.
The operational impact of this vulnerability extends beyond simple privilege escalation as it provides attackers with complete control over the affected network device's underlying operating system. An attacker could potentially execute commands to modify network configurations, establish backdoors, exfiltrate sensitive data, or even compromise other devices on the same network segment. The attack surface is particularly concerning given that these are network infrastructure devices that often serve as critical points of entry and control within enterprise and residential networks.
From a threat modeling perspective, this vulnerability maps directly to several ATT&CK techniques including T1059.001 for command and script interpreter execution, T1021.001 for remote services, and T1566 for credential access through network device compromise. The attack requires only valid administrative credentials which are often weaker than expected in many deployment scenarios, making this vulnerability particularly dangerous in environments where default passwords remain unchanged or where credential management practices are inadequate.
Mitigation strategies should include immediate implementation of strong authentication controls with multi-factor authentication where possible, regular firmware updates from the vendor to address the specific command injection flaw, network segmentation to limit lateral movement capabilities, and monitoring for suspicious command execution patterns. Additionally, device configuration should enforce strict input validation on all user-facing interfaces and implement proper command escaping mechanisms. Network administrators should also consider disabling unnecessary administrative interfaces and implementing firewall rules that restrict access to management ports from trusted networks only. The vulnerability demonstrates the critical importance of secure coding practices in embedded network devices and highlights the need for comprehensive security testing throughout the software development lifecycle, particularly focusing on input validation and sanitization mechanisms.