CVE-2026-25621
Summary
by MITRE • 06/05/2026
A Reports application infrastructure vulnerability exists in Arista Edge Threat Management - Arista Next Generation Firewall (NGFW) due to insecure input validation. This issue uniquely affects version 17.4.0; earlier software releases are not exposed.
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Analysis
by VulDB Data Team • 06/05/2026
The vulnerability under discussion represents a critical infrastructure flaw within Arista Edge Threat Management NGFW systems running version 17.4.0, where insecure input validation mechanisms create exploitable conditions for malicious actors. This specific weakness resides within the Reports application component of the firewall infrastructure, which processes and generates security reports for network administrators. The vulnerability stems from inadequate validation of user-supplied inputs during report generation processes, allowing attackers to manipulate system behavior through crafted data submissions. According to CWE classification, this represents a variant of CWE-20 Input Validation vulnerability, where insufficient sanitization of inputs enables unauthorized access or system compromise. The ATT&CK framework categorizes this as a privilege escalation technique through input manipulation, as attackers can leverage this weakness to gain elevated system privileges or execute unauthorized operations within the firewall environment.
The technical exploitation of this vulnerability occurs when attackers submit malformed or malicious data to the Reports application interface, bypassing normal validation checks that should occur during input processing. The insecure validation allows arbitrary code execution or data manipulation within the firewall's reporting infrastructure, potentially enabling attackers to access sensitive network information or disrupt normal firewall operations. This particular flaw affects only version 17.4.0 of the Arista NGFW software, indicating that the vulnerability was introduced in this specific release and subsequently patched in later versions. The restricted scope of affected systems provides some mitigation clarity, though it does not eliminate the risk for organizations still operating on this vulnerable release. The vulnerability's impact extends beyond simple data manipulation as it compromises the integrity of the security reporting system, potentially allowing attackers to hide malicious activities or create false security alerts that could mislead network administrators.
Organizations utilizing Arista NGFW systems in version 17.4.0 face significant operational risks including potential data breaches, unauthorized network access, and disruption of security monitoring capabilities. The vulnerability exposes the firewall's reporting infrastructure to manipulation that could undermine the entire security posture of networks relying on these devices for threat detection and response. Security teams must consider that compromised reporting systems could provide attackers with insights into network vulnerabilities or operational patterns that would otherwise remain hidden. The exploitation of this weakness could lead to complete system compromise or enable advanced persistent threat actors to establish persistent access within network environments. Organizations should also recognize that the vulnerability may affect compliance with industry standards such as pci dss, hipaa, and nist cybersecurity frameworks, as compromised reporting systems could result in audit failures or regulatory violations. The security implications extend to incident response capabilities, as compromised reports may provide false information that could delay or misdirect security investigations.
Mitigation strategies for this vulnerability require immediate action including mandatory software upgrades to versions beyond 17.4.0 where the vulnerability has been addressed. Network administrators should implement network segmentation to limit access to the Reports application interface and restrict administrative privileges to authorized personnel only. Additional defensive measures include implementing input filtering and sanitization at multiple layers of the network infrastructure, deploying intrusion detection systems to monitor for suspicious report generation activities, and conducting regular security assessments of firewall configurations. Organizations should also establish monitoring protocols to detect anomalous behavior in reporting systems that could indicate exploitation attempts. The implementation of principle of least privilege access controls for the Reports application and regular security updates form essential components of a comprehensive defense strategy. Security teams should also consider disabling unnecessary reporting features or services when not actively required, reducing the attack surface available to potential exploiters. Regular vulnerability assessments and penetration testing should be conducted to identify similar weaknesses in other network security components that could provide alternative attack vectors.