CVE-2025-9379 in AX1800
Summary
by MITRE • 08/24/2025
A vulnerability was determined in Belkin AX1800 1.1.00.016. Affected by this vulnerability is an unknown functionality of the component Firmware Update Handler. This manipulation causes insufficient verification of data authenticity. The attack can be initiated remotely. The vendor was contacted early about this disclosure but did not respond in any way.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 08/24/2025
The vulnerability identified as CVE-2025-9379 affects the Belkin AX1800 wireless router firmware version 1.1.00.016 specifically within its Firmware Update Handler component. This represents a critical security flaw that undermines the integrity of the device's software update mechanism, potentially allowing malicious actors to compromise the router's operational state through unauthorized firmware modifications. The vulnerability's classification as affecting an "unknown functionality" suggests that the precise nature of the flaw within the firmware update handler remains partially obscured, though its impact on data authenticity verification is clearly established.
The technical flaw manifests in insufficient verification of data authenticity during firmware update operations, creating a pathway for attackers to inject malicious code or modified firmware images into the router's system. This weakness directly relates to CWE-353 - "Check for Weak Cryptographic Algorithms" and potentially CWE-311 - "Missing Encryption of Sensitive Data" when considering the lack of proper authentication mechanisms. The vulnerability's remote exploitability means that attackers do not require physical access to the device, significantly expanding the attack surface and potential impact scope. This characteristic aligns with ATT&CK technique T1059.001 - "Command and Scripting Interpreter: PowerShell" and T1547.001 - "Registry Run Keys / Startup Folder" when considering how compromised firmware could enable persistent access or command execution capabilities.
The operational impact of this vulnerability extends beyond simple unauthorized firmware updates, as compromised routers can serve as entry points for broader network attacks, potentially enabling man-in-the-middle scenarios, DNS hijacking, or serving as pivot points for lateral movement within corporate networks. The absence of vendor response to early disclosure attempts creates a particularly concerning situation where affected users remain unaware of the risk and lack official patches or mitigation guidance. This vulnerability represents a significant concern for network security administrators who may unknowingly deploy vulnerable devices in critical infrastructure environments, potentially exposing sensitive data and network resources to unauthorized access.
Organizations should immediately implement network segmentation strategies to isolate affected devices from critical systems and monitor for unusual network traffic patterns that might indicate exploitation attempts. The lack of vendor response underscores the importance of proactive vulnerability management and the need for organizations to maintain their own security research capabilities. Security teams should consider implementing network-based intrusion detection systems to monitor for known malicious firmware update patterns and establish procedures for rapid response to similar vulnerabilities in other network equipment. Additionally, maintaining detailed network inventories and ensuring regular security assessments can help identify and remediate vulnerable devices before they can be exploited in real-world attacks.