Overview
The cybersecurity landscape is constantly evolving, with new threats emerging every day. One of these threats is CVE-2025-25230, a recently discovered vulnerability in Omnissa Horizon Client for Windows. This vulnerability is concerning due to its potential to allow a local attacker to elevate privileges, potentially leading to system compromise or data leakage. As a trusted platform for remote desktop access, any security flaw in Horizon Client is a cause for concern, particularly for businesses and organizations that rely on it for their operations.
This blog post will provide an in-depth look at CVE-2025-25230, what it involves, and how it could potentially be used against affected systems. We’ll also provide guidance for mitigating this vulnerability to help protect your systems and data.
Vulnerability Summary
CVE ID: CVE-2025-25230
Severity: High (7.8 CVSS score)
Attack Vector: Local
Privileges Required: Low
User Interaction: Required
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Omnissa Horizon Client for Windows | All current versions
How the Exploit Works
CVE-2025-25230 is an elevation of privileges vulnerability. This type of vulnerability exists when a lower-privileged user or process can gain higher privileges than intended by the system’s design. In the case of the Omnissa Horizon Client for Windows, a malicious actor with local access to the system may exploit this vulnerability to gain elevated privileges. This could potentially allow the actor to execute commands with higher permissions, potentially leading to system compromise or data leakage.
Conceptual Example Code
The following is a conceptual example of how the vulnerability might be exploited. Note that this is a simplified representation and the actual exploitation would likely involve more complex techniques and payloads.
C:\> runas /user:Administrator "HorizonClient.exe"
Enter the password for Administrator: [malicious actor enters their password]
Attempting to start HorizonClient.exe as user "Administrator" ...In this example, the `runas` command is used to attempt to run the Horizon Client as an Administrator user. If the vulnerability is successfully exploited, the Horizon Client would run with Administrator privileges, potentially allowing the malicious actor to perform actions that they would not usually be permitted to do. It is important to note that this is a local attack vector, requiring the malicious actor to have physical or remote access to the system.