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CVE-2026-59916 is a vulnerability identified in Dell Display and Peripheral Manager (DDPM) for Windows. The core of this issue lies in an Improper Access Control flaw, which occurs when the software does not correctly enforce restrictions on what actions a user can perform. Specifically, it fails to properly validate permissions, allowing a low-privileged local attacker to perform operations that should be restricted to higher-privileged users.
This flaw is classified under CWE-290: Authentication Bypass by Spoofing. An attacker with only basic local access can exploit this weakness to escalate their privileges and execute arbitrary code. Successful exploitation could allow an attacker to gain SYSTEM-level access, effectively taking full control of the affected system.
The vulnerability affects DDPM Windows versions prior to 2.3.0.17. The issue stems from a lack of proper authorization checks within the application, making it possible for a non-privileged user to interact with high-privilege processes or services in an unintended way.
Dell released a security advisory, DSA-2026-320, on August 4, 2026, to address this and other vulnerabilities. While the CVSS score of 7.8 (High) indicates significant risk, the vulnerability has not been added to CISA’s Known Exploited Vulnerabilities (KEV) catalog, and its EPSS score is low (0.11%), suggesting a lower likelihood of immediate widespread exploitation. Nevertheless, given its potential for privilege escalation and arbitrary code execution, applying the available patch is strongly recommended.
DailyCVE Form:
Platform: Dell DDPM Windows
Version: < 2.3.0.17
Vulnerability: Improper Access Control
Severity: High (7.8)
date: 2026-08-12
Prediction: 2026-08-04 (Patch Released)
What Undercode Say:
Analysis of CVE-2026-59916 reveals a classic local privilege escalation vector. The core problem is that DDPM’s service or its components run with elevated privileges but do not properly validate the identity or permissions of the calling process. This allows a low-privileged user to send crafted requests or interact with the service in a way that causes it to execute actions with SYSTEM-level privileges.
Exploit: (Educational Purposes!)
While a public exploit for CVE-2026-59916 is not readily available, the theoretical exploitation would involve the following steps. This information is for educational purposes only.
1. Identify the Vulnerable Service: The attacker would first identify the DDPM service or process running with high privileges (e.g., DDPMService.exe).
2. Craft a Malicious Request: The attacker would then develop a method to interact with this service, likely via its inter-process communication (IPC) mechanism, to send a crafted request.
3. Abuse the Access Control Flaw: The request would be designed to exploit the improper access control, instructing the privileged service to perform an action on behalf of the attacker, such as writing a file to a protected directory or executing a command.
4. Gain Elevated Privileges: This would result in the execution of arbitrary code with the privileges of the service (often SYSTEM), effectively granting the attacker full control over the system.
A potential proof-of-concept might involve using a tool to interact with the service’s named pipe or other IPC mechanisms.
Protection:
To protect against this vulnerability, the following steps are crucial:
Apply the Patch: The primary and most effective protection is to install the Dell security update DSA-2026-320. This update upgrades DDPM Windows to version 2.3.0.17 or later, which addresses the improper access control flaw.
Principle of Least Privilege: Ensure that users on the system operate with the minimum privileges necessary. Restrict local access to administrative functions.
Monitor for Suspicious Activity: Monitor system logs for unusual attempts to interact with the DDPM service or unexpected privilege escalations.
Impact:
The successful exploitation of CVE-2026-59916 has a High impact. The primary consequences include:
Elevation of Privilege: A low-privileged user can gain SYSTEM-level privileges, allowing them to bypass all security restrictions.
Arbitrary Code Execution: With elevated privileges, the attacker can execute any code on the system, including malware, ransomware, or other malicious payloads.
Full System Compromise: The attacker can achieve complete control over the affected system, leading to data theft, installation of backdoors, and use of the system for further attacks within the network.
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Sources:
Reported By: nvd.nist.gov
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