CVE-2026-85488 in Active Support Connectivity Gateway
Summary
by MITRE • 10/08/2026
Brocade ASCG before 3.5.0 has a well-known Brocade default password embedded in a script distributed to every customer. Any local authenticated user with read access to the installation path can discover this credential and perform privilege escalation on affected Open Virtual Appliance (OVA) deployments, where default configuration settings remain in place.
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Analysis
by VulDB Data Team • 10/08/2026
The vulnerability identified in Brocade Advanced Software Configuration Gateway prior to version 3.5.0 represents a critical failure in secure credential management practices within the appliance's deployment architecture. The core technical flaw stems from the inclusion of hardcoded default credentials directly embedded within scripts that are distributed as part of the standard installation package for every customer instance. This design choice violates fundamental security principles regarding secret handling, specifically failing to ensure that sensitive authentication data is unique per deployment and protected against unauthorized access. By embedding these static passwords into publicly accessible or easily retrievable script files, the system creates a predictable attack vector that undermines the integrity of the administrative interface regardless of any subsequent configuration changes made by administrators after initial setup.
From an operational perspective, this vulnerability allows for significant privilege escalation attacks within Open Virtual Appliance deployments where default configurations have not been explicitly altered during the provisioning process. Any local user who possesses read access to the installation path can extract these hardcoded credentials and subsequently authenticate as a privileged administrator on the system. This effectively bypasses intended authentication controls, granting attackers full control over the virtual appliance without needing to exploit complex software logic errors or buffer overflow conditions. The impact is severe because it allows an attacker with minimal initial privileges to gain complete administrative access, potentially leading to data exfiltration, lateral movement within the network, and disruption of critical services managed by the Brocade ASCG platform.
This flaw aligns closely with Common Weakness Enumeration category CWE-798, which describes the use of hard-coded credentials that are not changed during installation or configuration. It also relates to CWE-256 regarding the storage of passwords in a recoverable format within software artifacts. In terms of adversary tactics and techniques, this vulnerability facilitates initial access through credential harvesting as defined by MITRE ATT&CK technique T1078, specifically when attackers leverage default credentials that were not properly secured or rotated during system deployment. The ease with which these credentials can be discovered makes it a high-value target for automated scanning tools and opportunistic attacks against unpatched virtual appliances in cloud environments or on-premises data centers.
Mitigation strategies must focus on immediate remediation of the underlying configuration weaknesses alongside software updates. Organizations running affected versions should upgrade to Brocade ASCG version 3.5.0 or later, where this hardcoded credential issue has been addressed by the vendor. For systems that cannot be immediately upgraded due to operational constraints, administrators must manually audit all script files within the installation directory for embedded passwords and replace them with dynamically generated secrets managed through a secure vault solution such as HashiCorp Vault or AWS Secrets Manager. Additionally, strict file permission controls should be enforced on the installation path to ensure that only authorized administrative accounts have read access to sensitive configuration scripts. Regular security audits and automated scanning for default credentials are essential to detect similar misconfigurations across other deployed instances of the software before they can be exploited by malicious actors seeking privilege escalation opportunities.