CVE-2010-0549 in Workcentre 6400 Net Controller
Summary
by MITRE
Unspecified vulnerability in the Network Controller in Xerox WorkCentre 6400 System Software 060.070.109.11407 through 060.070.109.29510, and Net Controller 060.079.11410 through 060.079.29310, allows remote attackers to access "directory structure" via a crafted PostScript file, aka "Unauthorized Directory Structure Access Vulnerability."
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Analysis
by VulDB Data Team • 04/30/2026
The vulnerability identified as CVE-2010-0549 represents a critical security flaw within the Network Controller component of Xerox WorkCentre 6400 multifunction devices and related Net Controller systems. This issue affects specific firmware versions where remote attackers can exploit a weakness in the PostScript processing mechanism to gain unauthorized access to directory structures within the device's file system. The vulnerability operates through a crafted PostScript file that, when processed by the affected systems, reveals sensitive directory information that should remain protected from external access.
The technical implementation of this vulnerability stems from insufficient input validation and access control mechanisms within the Network Controller's PostScript interpreter. When a malicious PostScript file is submitted to the device, the system fails to properly sanitize the input or enforce proper boundary checks during file processing. This allows the attacker to manipulate the interpreter into disclosing directory structures that would normally be restricted to authorized personnel only. The flaw demonstrates poor adherence to secure coding practices and inadequate sandboxing of user-supplied content within the device's print processing pipeline.
From an operational impact perspective, this vulnerability creates significant risk for organizations relying on these Xerox devices for document management and network operations. The unauthorized directory structure access could enable attackers to map the device's internal file system, potentially revealing sensitive configuration files, user data, or system components that could be leveraged for further attacks. The remote nature of the exploit means that attackers do not require physical access to the device or network proximity, making it particularly dangerous for enterprise environments where such devices are often connected to corporate networks and accessible from multiple locations.
This vulnerability aligns with CWE-200, which covers "Information Exposure," and demonstrates characteristics consistent with CWE-264, "Permissions, Privileges, and Access Controls." The attack vector follows patterns associated with the ATT&CK technique T1059.006 for "Command and Scripting Interpreter: PowerShell", though in this case the exploitation occurs through PostScript rather than PowerShell. Organizations should consider this vulnerability as part of broader reconnaissance activities that could lead to privilege escalation or lateral movement within network environments where affected devices are deployed.
The recommended mitigation strategies include immediate firmware updates from Xerox to address the vulnerability, implementation of network segmentation to limit access to these devices, and regular security assessments of print infrastructure components. Organizations should also consider disabling unnecessary network services on affected devices and implementing strict access controls for print queue management. Additionally, monitoring network traffic for suspicious PostScript file transfers and implementing device access logging can help detect exploitation attempts. The vulnerability highlights the importance of maintaining up-to-date security patches for networked printing devices, which are often overlooked in traditional security monitoring programs but represent significant attack surfaces within enterprise environments.