Overview
In this blog post, we will dive deep into a recently uncovered vulnerability in CyberData’s 011209 Intercom systems. This vulnerability, tracked as CVE-2025-30515, poses a severe risk to users due to its high CVSS severity score of 9.8. The flaw could allow an authenticated attacker to upload arbitrary files, potentially compromising the entire system or leading to data leaks. Given the widespread use of these intercom systems in businesses and residences alike, understanding and mitigating this vulnerability should be a top priority for network administrators, IT professionals, and all users of the affected products.
Vulnerability Summary
CVE ID: CVE-2025-30515
Severity: Critical (9.8 CVSS score)
Attack Vector: Network
Privileges Required: Low
User Interaction: Required
Impact: System compromise or data leakage
Affected Products
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Product | Affected Versions
CyberData 011209 Intercom | All versions
How the Exploit Works
The vulnerability in the CyberData 011209 Intercom system arises from its insecure file upload functionality. An authenticated attacker could exploit this vulnerability by uploading arbitrary files to multiple locations within the system. This could allow the attacker to execute unauthorized code or commands, leading to system compromise or data leakage. This vulnerability is particularly concerning as it only requires low privileges and user interaction, making it easier to exploit compared to others requiring higher privileges.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited. This pseudocode represents a malicious HTTP request:
POST /upload_file HTTP/1.1
Host: target.intercom.com
Content-Type: multipart/form-data
{
"file": {
"name": "malicious_script.sh",
"content": "echo 'You are hacked!'"
}
}In this example, the attacker is attempting to upload a malicious shell script named “malicious_script.sh” which, when executed, can compromise the system.
Mitigation Guidance
Users of the affected CyberData 011209 Intercom systems are advised to apply the latest vendor patch as soon as possible to mitigate this vulnerability. If a patch is not immediately available, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. These systems can help detect and block unauthorized file uploads, potentially preventing exploitation of this vulnerability.