CVE-2026-58564 in Command Update
Summary
by MITRE • 08/19/2026
Dell Command Update (DCU), versions prior to 5.7.1, contain an Incorrect Default Permissions vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Filesystem access for attacker.
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Analysis
by VulDB Data Team • 08/20/2026
The Dell Command Update utility, specifically in versions preceding the release of version 5.7.1, exhibits a critical security flaw characterized by incorrect default permissions on its installation directories and associated configuration files. This misconfiguration represents a fundamental failure in implementing proper access control mechanisms during software deployment or initialization. The vulnerability stems from the application not adhering to the principle of least privilege when setting file system attributes for components that require elevated privileges for operation but do not necessarily need write access by standard users. Consequently, these directories and files are created with permissions that allow modification by non-administrative accounts, creating a persistent foothold for malicious actors operating within the local environment.
From a technical perspective, this flaw falls squarely under the category of CWE-732: Incorrect Permission Assignment for Critical Resource. The vulnerability allows any user account on the system, regardless of their privilege level, to alter or replace critical binaries and configuration files used by Dell Command Update. Since these components are often executed with higher privileges during update checks or installations, an attacker can leverage this permission weakness to inject malicious code into the execution flow. By modifying a binary that is subsequently run by a privileged process, such as SYSTEM or Administrator, the attacker achieves arbitrary code execution under those elevated credentials without needing initial administrative rights. This mechanism effectively bypasses standard user-level restrictions and elevates privileges through trusted application manipulation.
The operational impact of this vulnerability is significant for organizations relying on Dell Command Update for centralized patch management and system maintenance. A low-privileged attacker with local access, which can be achieved through various vectors such as phishing attacks leading to credential theft or physical access to an unattended workstation, can exploit this flaw to gain full control over the affected machine. Once privilege escalation is successful via code injection into a privileged process, the attacker can install backdoors, exfiltrate sensitive data, move laterally across the network using compromised credentials, and establish persistence mechanisms that survive reboots. The risk is further compounded by the fact that Dell Command Update often runs with high privileges to ensure it can apply system-level updates, making it an attractive target for privilege escalation attacks within enterprise environments where such tools are ubiquitously deployed.
This vulnerability aligns closely with MITRE ATT&CK techniques related to Privilege Escalation and Defense Evasion. Specifically, it relates to T1055: Process Injection or more accurately in this context, the broader category of abusing trusted processes for privilege escalation, similar to techniques observed in DLL sideloading or binary planting attacks where an attacker places a malicious file in a directory that is searched by a privileged application before its legitimate counterpart. The lack of restrictive permissions on these directories facilitates such attacks without requiring complex exploitation chains beyond simple file replacement.
To mitigate this vulnerability, organizations must immediately apply the vendor-recommended patch to upgrade Dell Command Update to version 5.7.1 or later, which corrects the permission settings for all affected files and directories. In environments where immediate patching is not feasible due to compatibility testing requirements, administrators should manually audit the installation directory of Dell Command Update and enforce strict access control lists that restrict write permissions to only administrative accounts. Additionally, implementing application whitelisting solutions can prevent unauthorized binaries from executing in these directories even if they are replaced by an attacker. Regular auditing of file system permissions for all installed enterprise software is also recommended as a best practice to ensure continued compliance with security baselines and to prevent similar misconfigurations in other applications.