CVE-2026-25623 in Edge Threat Management
Summary
by MITRE • 06/05/2026
An input validation command execution vulnerability exists in the browser management pipeline of Arista Edge Threat Management - Arista Next Generation Firewall (NGFW). Authenticated administrators can leverage this exposure to obtain underlying terminal script code processing execution permissions.
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Analysis
by VulDB Data Team • 06/06/2026
This vulnerability represents a critical command injection flaw within Arista's Next Generation Firewall management interface that stems from inadequate input validation in the browser-based administrative pipeline. The security weakness allows authenticated administrators to manipulate input fields or parameters that are subsequently processed by underlying terminal scripts, creating an avenue for arbitrary code execution. Such vulnerabilities typically arise when user-supplied data is not properly sanitized or validated before being passed to system commands or shell interfaces, enabling attackers to inject malicious payloads that execute with the privileges of the administrative account.
The technical implementation of this flaw likely involves insufficient sanitization of parameters within the firewall's web management interface where administrative commands are processed. When an authenticated administrator interacts with certain management functions, the system fails to properly validate or escape input data before it is passed to backend terminal processing components. This creates a path where maliciously crafted input can bypass normal validation checks and directly influence command execution flows. The vulnerability operates at the intersection of web application security and system-level command processing, making it particularly dangerous as it leverages legitimate administrative access to escalate privileges and execute unauthorized operations.
The operational impact of this vulnerability extends beyond simple privilege escalation as it provides attackers with the ability to manipulate the firewall's underlying operating system through terminal command execution. An attacker with administrative credentials could potentially execute arbitrary shell commands, access sensitive system files, modify firewall rules, or even establish persistence mechanisms within the network infrastructure. This threat model aligns with common attack patterns documented in the attack framework, where initial access through legitimate administrative interfaces is leveraged to achieve broader system compromise. The vulnerability affects the integrity and availability of the firewall's security controls, potentially allowing attackers to bypass network protection mechanisms or redirect traffic flows.
Security professionals should implement immediate mitigations including input validation controls, parameter sanitization, and least privilege access models for administrative accounts. The vulnerability aligns with CWE-77 and CWE-89 categories related to command injection and improper input validation. Organizations should also consider implementing web application firewalls, monitoring for suspicious administrative activities, and ensuring proper patch management for network security appliances. The attack surface can be reduced by limiting administrative access to essential personnel only and implementing multi-factor authentication for administrative accounts. Regular security assessments of management interfaces and system command processing functions should be conducted to identify similar vulnerabilities that could be exploited in similar network security devices.