CVE-2026-86359 in Repository Manager
Summary
by MITRE • 09/16/2026
Dell Repository Manager, versions prior to 3.5.2, contains an Incorrect Default Permissions vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to Elevation of privileges.
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Analysis
by VulDB Data Team • 09/16/2026
The Dell Repository Manager software, specifically in versions preceding the release of version 3.5.2, suffers from a critical security flaw classified as an incorrect default permissions issue. This vulnerability stems from improper configuration of file system access controls within the application's installation directory or associated data stores. When such misconfigurations occur, files and directories that should be restricted to administrative users are inadvertently granted broader read, write, or execute permissions for standard user accounts. In a typical enterprise environment where Dell Repository Manager is deployed to manage firmware updates and driver packages across multiple systems, these components often contain sensitive configuration files, credential stores, or executable binaries essential for the application's operation. The failure to enforce strict access control lists on these resources creates an attack surface that allows unauthorized entities to interact with core system files in ways intended only for privileged administrators.
From a technical perspective, this vulnerability facilitates Elevation of Privileges by allowing low-privileged users to modify or replace critical components of the Dell Repository Manager application. An attacker who has obtained remote access through other means, such as compromised user credentials or network exposure, can leverage these loose permissions to inject malicious code into configuration files or overwrite executable binaries with trojanized versions. Because the software often runs with elevated privileges during installation and update processes, any modification made by a low-privileged user is subsequently executed under those higher privilege contexts when the application next launches or performs an automated task. This mechanism effectively bypasses standard operating system security boundaries, granting the attacker administrative control over the host machine without needing to exploit additional kernel-level flaws or password guessing attacks.
The operational impact of this vulnerability extends beyond simple local compromise on a single endpoint. In environments where Dell Repository Manager is used for centralized firmware management, an elevated attacker could manipulate update repositories to distribute malicious firmware updates to other managed devices. This transforms a local privilege escalation into a potential supply chain attack vector, affecting the integrity and security posture of the entire network infrastructure. Furthermore, access to configuration files may reveal stored credentials or API keys that can be used for lateral movement within the corporate network. The ability to alter application behavior also means an attacker could disable logging mechanisms or install persistent backdoors that survive system reboots, complicating incident response efforts and extending the window of undetected presence on compromised systems.
Mitigation strategies must prioritize immediate remediation through software updates. Organizations running versions prior to 3.5.2 should upgrade to the latest patched version as soon as possible, ensuring that Dell has addressed the permission settings in their release. In cases where immediate patching is not feasible due to operational constraints, administrators should manually audit and correct file system permissions on the installation directory and related data folders. This involves restricting read, write, and execute access for standard users while maintaining appropriate access levels for service accounts or administrative groups that require it. Additionally, implementing strict application whitelisting policies can prevent unauthorized binaries from executing even if they are placed in vulnerable directories. Regular security audits using tools compliant with industry standards such as the Center for Internet Security benchmarks should be conducted to detect and correct similar misconfigurations across all managed endpoints.
From a classification standpoint, this vulnerability aligns closely with CWE-732, which describes incorrect default permissions that leave resources exposed to unauthorized access. It also relates to CWE-250 regarding execution with unnecessary privileges if the application itself runs as root or administrator unnecessarily. In terms of adversary tactics, exploitation falls under MITRE ATT&CK technique T1068 Exploitation for Privilege Escalation and potentially T1059 Command and Scripting Interpreter if scripts are modified to automate further attacks. Security teams should monitor for unusual file modifications in the Dell Repository Manager installation path and review logs for any attempts by low-privileged accounts to access restricted directories, as these indicators may signal active exploitation of this flaw before a patch is applied.