CVE-1999-1355 in Insight Management Agent
Summary
by MITRE
BMC Patrol component, when installed with Compaq Insight Management Agent 4.23 and earlier, or Management Agents for Servers 4.40 and earlier, creates a PFCUser account with a default password and potentially dangerous privileges.
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Analysis
by VulDB Data Team • 04/20/2026
The vulnerability described in CVE-1999-1355 represents a critical security flaw in legacy systems that was prevalent during the late 1990s era of enterprise IT infrastructure. This issue specifically affects BMC Patrol components integrated with Compaq Insight Management Agent versions 4.23 and earlier, as well as Management Agents for Servers versions 4.40 and earlier. The vulnerability stems from the insecure default configuration practices that were common in enterprise monitoring and management software of that time period, where security considerations were often secondary to functionality and ease of deployment.
The technical flaw manifests through the automatic creation of a PFCUser account during the installation process of the affected BMC Patrol components. This account is provisioned with a hardcoded default password that remains unchanged after installation, creating a persistent security weakness that can be exploited by unauthorized users. The vulnerability is classified under CWE-798 as the use of hard-coded credentials, which represents one of the most fundamental and dangerous security misconfigurations in software development. The PFCUser account is granted potentially dangerous privileges that exceed the minimum necessary access rights, allowing for elevated system control and potential privilege escalation within the monitored environment. This default account creation process bypasses normal authentication and authorization protocols that should be enforced in secure systems.
The operational impact of this vulnerability extends far beyond simple credential exposure, as it provides attackers with a consistent entry point into enterprise monitoring infrastructure that was typically considered a critical component of system management and security. The presence of this account with default credentials creates a persistent backdoor that can be exploited by attackers who have gained access to the network or system, potentially leading to complete compromise of the monitored infrastructure. This vulnerability directly maps to ATT&CK technique T1078.004 for Valid Accounts, as it provides legitimate credentials that can be used to maintain access to systems. The implications are particularly severe because monitoring agents like BMC Patrol and Compaq Insight Management Agent typically operate with elevated privileges to perform their functions, making the default account a potential gateway to broader system compromise and data exfiltration.
Mitigation strategies for this vulnerability require immediate action to address the hardcoded credentials and privilege escalation issues. Organizations must first identify all instances of the affected software versions and immediately change the default password for the PFCUser account, implementing strong, unique credentials that follow organizational security policies. The privilege levels assigned to this account should be reviewed and reduced to the minimum necessary for system monitoring functions, following the principle of least privilege as recommended by security frameworks. System administrators should implement comprehensive patch management processes to ensure that all legacy monitoring software is updated to versions that address this vulnerability. Additionally, network segmentation and access controls should be strengthened around systems running these monitoring agents to limit potential attack vectors and reduce the impact of credential compromise. The remediation process should also include regular security audits to identify and eliminate other hardcoded credentials and default accounts that may exist in legacy enterprise systems, as this vulnerability represents a common pattern in insecure software design practices of the era.