CVE-2026-9140 in 1718-AENTR
Summary
by MITRE • 07/14/2026
A denial-of-service security issue exists in the 1719-AENTR. The security issue stems from improper handling of a UDP unicast network storm, which causes the device to become overloaded and lose communication. A power cycle is required to recover.
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Analysis
by VulDB Data Team • 07/14/2026
This vulnerability represents a critical denial-of-service condition affecting network devices that implement the 1719-AENTR protocol or similar UDP-based communication frameworks. The security issue manifests through improper handling of UDP unicast network storms, where malicious or accidental flooding of UDP packets overwhelms the device's processing capabilities and network stack resources. This specific flaw falls under the category of resource exhaustion attacks, which are classified as CWE-400 in the Common Weakness Enumeration framework, specifically targeting the exhaustion of computational resources through malformed or excessive network traffic patterns.
The technical implementation of this vulnerability exploits the device's failure to properly implement rate limiting, packet filtering, or resource allocation controls for UDP traffic. When subjected to sustained UDP unicast storms, the affected device experiences a cascading failure where network processing units become overwhelmed with incoming packets that exceed normal operational thresholds. The device's network stack architecture does not adequately distinguish between legitimate and malicious traffic patterns, leading to complete service disruption and communication breakdown across all network interfaces. This behavior aligns with ATT&CK technique T1498 which describes network denial-of-service attacks targeting network infrastructure components.
The operational impact of this vulnerability extends beyond simple service interruption as it requires manual intervention through power cycling to restore normal device operation, indicating a complete system hang or deadlock condition rather than a recoverable error state. Network administrators face significant operational challenges as this attack can be initiated remotely without requiring authentication credentials, making it particularly dangerous in production environments where continuous network availability is critical. The requirement for physical power cycle recovery creates substantial downtime and operational disruption that can cascade across dependent systems relying on the affected device's network services.
Mitigation strategies should focus on implementing robust network traffic filtering mechanisms at multiple layers of the network infrastructure including perimeter firewalls, network access control lists, and device-specific rate limiting configurations. Network segmentation through VLANs and proper firewall rules can help contain potential storm impacts to specific network segments rather than allowing full device compromise. Device vendors should implement proper UDP packet rate limiting, connection tracking, and resource monitoring capabilities that can detect abnormal traffic patterns and automatically throttle or drop excessive packets. The implementation of intrusion detection systems with signature matching for known malicious UDP storm patterns provides additional defense-in-depth layers. Organizations should also establish automated alerting mechanisms to notify network administrators when device resource utilization exceeds predefined thresholds, enabling proactive intervention before complete service loss occurs.