CVE-2026-6374 in WAH7601
Summary
by MITRE • 08/10/2026
Use of Hard-coded Credentials vulnerability in Zyxel Networks WAH7601 allows Read Sensitive Constants Within an Executable.
This issue affects WAH7601: through 20.07.2026.
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Analysis
by VulDB Data Team • 08/10/2026
The Zyxel Networks WAH7601 wireless access point device contains a critical use of hard-coded credentials vulnerability that exposes sensitive constants within the executable binary. This weakness allows unauthorized parties to extract hardcoded authentication credentials and system parameters directly from the firmware image, potentially compromising the entire network infrastructure. The vulnerability stems from improper security design practices where developers embedded administrative passwords and cryptographic keys directly into the software source code during development phases.
This specific flaw represents a classic CWE-798 weakness categorized under the use of hard-coded credentials pattern within software applications. The device's firmware contains hardcoded administrative credentials that are not dynamically generated or securely stored, making them accessible to anyone with access to the executable files. The issue affects all versions through 20.07.2026, indicating a prolonged period of exposure where this security weakness remained unaddressed.
The operational impact of this vulnerability extends beyond simple credential theft, as it provides attackers with persistent access to network management interfaces and potentially sensitive system information. Through techniques such as reverse engineering and static analysis of the firmware, threat actors can extract hardcoded credentials that grant administrative privileges to the device. This exposure enables attackers to perform lateral movement within the network, modify device configurations, or establish persistent backdoors for continued unauthorized access.
Security professionals should note this vulnerability aligns with several ATT&CK techniques including credential access through hard-coded credentials and privilege escalation via administrative access. The attack surface is particularly concerning as it affects enterprise wireless infrastructure, where compromised access points can serve as entry points for broader network infiltration. Organizations using Zyxel WAH7601 devices should immediately implement firmware updates from the vendor to address this critical weakness.
The remediation approach requires immediate firmware patching and implementation of secure credential management practices for future deployments. Network administrators must conduct comprehensive vulnerability assessments of all wireless infrastructure components and ensure proper credential rotation procedures are implemented. Additionally, the device configuration should be reviewed to verify that hardcoded credentials have been properly removed from the system and that dynamic authentication mechanisms are in place for all administrative functions.
Industry best practices recommend following NIST SP 800-53 security controls for access control and system configuration management to prevent similar issues in future deployments. The vulnerability demonstrates the critical importance of secure software development lifecycle practices, particularly regarding credential management and code review processes that should identify and eliminate hardcoded sensitive information before deployment. Organizations should implement continuous monitoring solutions to detect unusual access patterns that may indicate exploitation attempts against this class of vulnerability.
This weakness exemplifies how embedded systems security can be compromised through simple design oversights in credential management, highlighting the necessity of robust security testing procedures during product development phases. The prolonged exposure period suggests inadequate security validation processes within the vendor's development lifecycle, requiring enhanced quality assurance measures for network infrastructure devices to prevent similar vulnerabilities from appearing in future releases.