VMware vCenter contains a denial-of-service vulnerability. A malicious actor who is authenticated through vCenter and has permission to perform API calls for guest OS customization may trigger this vulnerability to create a denial-of-service condition. This vulnerability has a CVSS score of 4.4, indicating a medium severity level. Organizations should address this issue in their patch cycle to mitigate potential impacts.
The risk to organizations includes service disruptions that can affect business operations. Although the exploitability is classified as medium, the availability impact is rated as high, emphasizing the need for prompt attention.
As of now, there are no known exploits associated with this vulnerability, which means that attackers have not yet demonstrated the capability to exploit it in the wild. However, the potential for a denial-of-service attack remains a concern, particularly for organizations that rely heavily on VMware vCenter for their virtualized environments.
Given the nature of this vulnerability, organizations should prioritize remediation to prevent any possible disruptions. Regular monitoring and timely updates will be critical in minimizing risks associated with this security flaw.
Vulnerability Details
The official description states that VMware vCenter contains a denial-of-service vulnerability, which allows an authenticated actor to exploit the system by making specific API calls. The CVSS score of 4.4 indicates that while the vulnerability is not critical, it poses a significant risk. The attack vector is classified as 'NETWORK', and the attack complexity is 'HIGH', meaning that specific conditions must be met for successful exploitation.
The vulnerability requires high privileges, and no user interaction is necessary. The impacts on confidentiality and integrity are both rated as 'NONE', but the availability impact is rated as 'HIGH'. This points to the potential for significant service interruption.
This vulnerability is classified under CWE-754, which pertains to improper check for unusual conditions. The publication date of this vulnerability is July 29, 2025.
Technical Analysis
The root cause of this vulnerability lies in the improper handling of API calls for guest OS customization within VMware vCenter. An authenticated user with sufficient privileges can leverage this vulnerability to trigger a denial-of-service condition.
The attack vector is network-based, meaning that an attacker could potentially exploit this vulnerability remotely. The attack complexity is classified as high, which indicates that certain conditions must be met, such as the attacker having authenticated access and appropriate permissions.
Since high privileges are required, the likelihood of exploitation may be lower in environments where access is tightly controlled. However, organizations must remain vigilant, as any authenticated user could potentially trigger this vulnerability.
In terms of impact, the vulnerability affects the availability of the service, as it can lead to service disruptions. Given that no data confidentiality or integrity is compromised, the primary concern remains the availability of the VMware vCenter environment.
Risk & Impact Analysis
The operational risk posed by this vulnerability is significant, especially for organizations that depend on VMware vCenter for managing their virtualized environments. The potential for service disruption could lead to major operational hurdles, affecting overall productivity.
Organizations should evaluate their current configurations and user permissions to ensure that only necessary individuals have access to perform API calls related to guest OS customization. Limiting access can mitigate the risk of exploitation.
Considering the CVSS score of 4.4, organizations should address this vulnerability in their priority patch cycle. Regular security assessments and vulnerability management practices will be essential in managing risks associated with this vulnerability.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
As of now, specific version information is not available. Organizations are advised to consider all versions prior to vendor patches as potentially affected.
Mitigation & Remediation
Organizations should prioritize patching VMware vCenter to address this denial-of-service vulnerability. If a patch is not available, consider implementing network controls to restrict access to the API endpoints that could be exploited. Additionally, regular audits of user permissions can help ensure that only authorized personnel have access to critical functionalities.
For further assistance, organizations may refer to resources on penetration testing to identify weaknesses in their systems.
Detection Guidance
Organizations should monitor logs for indicators of unauthorized API calls and unusual traffic patterns that may indicate attempts to exploit this vulnerability. Behavioral anomalies in the usage of vCenter functionalities should also be flagged for further investigation.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its potential to disrupt critical services within virtualized environments. As organizations continue to rely on virtualization for their operations, the ability to manage and secure these environments becomes increasingly important.
This vulnerability highlights the importance of stringent access controls and regular security assessments to mitigate risks effectively. Security teams should remain vigilant and adapt their strategies based on evolving threat landscapes.
For further insights into managing vulnerabilities, organizations are encouraged to explore our resources on vulnerability management programs and best practices in penetration testing. Additionally, exploring manual penetration testing can further enhance security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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