CVE-2025-30399 is a high-severity vulnerability affecting Microsoft .NET, PowerShell, and Visual Studio 2022. This vulnerability allows unauthorized attackers to execute code over a network due to an untrusted search path. With a CVSS score of 7.5, this vulnerability poses significant risks to organizations that utilize these technologies.
Organizations should prioritize patching immediately to safeguard against potential exploitation. The vulnerability's exploitation status is currently unconfirmed, as no public exploit has been reported at this time. However, due to the nature of the vulnerability, it is advisable for organizations to take preventive measures.
The urgency for defenders is high, as this vulnerability could lead to unauthorized access and potential data breaches. Organizations using affected versions of these Microsoft products must take immediate action to mitigate risks.
In the following sections, we will delve into the vulnerability details, technical analysis, and risk implications associated with CVE-2025-30399.
Vulnerability Details
The official CVE description states that this vulnerability allows an unauthorized attacker to execute code over a network due to an untrusted search path in .NET and Visual Studio. The CVSS score of 7.5 places this vulnerability in the high-severity category.
The vulnerability affects the following products: .NET, PowerShell, and Visual Studio 2022. It was published on June 13, 2025, and is classified under CWE-426.
Technical Analysis
The root cause of CVE-2025-30399 stems from an untrusted search path that allows attackers to execute code remotely. The attack vector is classified as network-based, meaning that an attacker can exploit this vulnerability over a network without physical access to the vulnerable system.
The attack complexity is high, requiring user interaction for successful exploitation. This means that the victim must perform some action, such as opening a malicious file or executing a compromised script, for the attack to succeed.
The privileges required for exploitation are none, which indicates that even unprivileged users can be targeted. The impacts on confidentiality, integrity, and availability are all rated as high, signifying that successful exploitation could lead to significant consequences for affected organizations.
Risk & Impact Analysis
The real-world risk associated with CVE-2025-30399 is substantial. Attackers could leverage this vulnerability to execute arbitrary code remotely, potentially leading to unauthorized access and manipulation of sensitive data. Organizations using affected versions of .NET, PowerShell, and Visual Studio 2022 are at risk of significant impacts, including data breaches and service interruptions.
The potential blast radius is extensive, as this vulnerability could affect multiple systems across an organization's network. Given the high CVSS score, organizations should assess their risk posture and prioritize remediation efforts, particularly for critical systems using these technologies.
Based on the analysis, organizations should address this vulnerability in their priority patch cycle to mitigate risks effectively.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected products include several versions of .NET, PowerShell, and Visual Studio 2022. Specifically, vulnerable versions of Visual Studio 2022 include ranges from 17.8.0 to 17.8.22, 17.10.0 to 17.10.16, 17.12.0 to 17.12.9, and 17.14.0 to 17.14.5. For .NET, versions 9.0.0 to 9.0.6 and 8.0.0 to 8.0.17 are also impacted, along with specific versions of PowerShell.
Mitigation & Remediation
To mitigate CVE-2025-30399, organizations should apply the latest patches and updates provided by Microsoft. For detailed patching guidance, organizations can refer to the Microsoft Security Update Guide.
Penetration testing should also be considered to validate the effectiveness of the patches. Additionally, organizations may implement configuration hardening and network controls to further mitigate risks. Continuous monitoring for unusual behavior and system changes is essential.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts, such as unusual network activity targeting .NET, PowerShell, and Visual Studio 2022 components. Behavioral anomalies, such as unexpected code execution or unauthorized access attempts, should also be investigated promptly.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-30399 lies in its demonstration of how untrusted search paths can lead to severe vulnerabilities in widely used development frameworks. Security teams should learn from this incident to strengthen their software development life cycles and ensure secure coding practices are followed.
This vulnerability represents a trend where attackers increasingly exploit configuration weaknesses in software development environments. Future defenses should include robust validation mechanisms and regular security assessments.
Vulnerability management programs can help organizations proactively identify and remediate similar weaknesses before they can be exploited.
Penetration testing methodologies should be reviewed and updated to address emerging threats such as this vulnerability.
Cloud security assessments must also consider such vulnerabilities in their frameworks to ensure comprehensive coverage.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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