CVE-2026-25621: Arista Edge Threat Management NGFW Reports Application Insecure Input Validation

Synopsis

An insecure input validation vulnerability exists in the Reports application of Arista Edge Threat Management - Arista Next Generation Firewall (NGFW), affecting only version 17.4.0. The flaw is reachable over the network but requires an authenticated admin-level account to exploit. Successful exploitation gives an attacker read access to confidential data and limited ability to tamper with or degrade the service. No fix version has been published; HarborGuard tracks the Arista advisory for patch availability.

HarborGuard Coverage

Exploit Conditions

• Network reachabilityRequired

  The attacker must reach the NGFW Reports application over the network; the service must be accessible from the attacker's vantage point.

• AuthenticationRequired

  An admin-level (high-privilege) account is needed; the vulnerability is not exploitable by unauthenticated users or low-privilege accounts.

• Victim interactionNot required

  No victim action is needed; the attacker can trigger the vulnerability directly without involving another user.

• Attack complexityDetail

  Attack complexity is low, meaning the exploit is reliable and does not depend on race conditions, memory layout, or other variable environmental factors.

Blast Radius

• Reads confidential data accessible to the Reports application, such as stored firewall logs, traffic reports, or user session records.
• Makes limited modifications to persisted report data or application state.
• Degrades the Reports application service, potentially disrupting log visibility and audit trail availability.
• Achieves limited impact on resources outside the immediate NGFW component, including adjacent security or logging subsystems.