Overview
The CVE-2025-27034 is a critical cybersecurity vulnerability that pertains to the process of selecting the Public Land Mobile Network (PLMN) from a System Operator (SOR) failed list. This vulnerability exposes systems to potential memory corruption, leading to severe consequences such as system compromise and data leakage. It is of particular concern to organizations and individuals utilizing software systems that rely on the PLMN selection process as it poses a significant threat to their cybersecurity infrastructure.
Vulnerability Summary
CVE ID: CVE-2025-27034
Severity: Critical (CVSS: 9.8)
Attack Vector: Network-based
Privileges Required: None
User Interaction: None
Impact: System compromise and data leakage upon successful exploitation.
Affected Products
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Product | Affected Versions
[Insert product] | All versions prior to [Insert fixed version]
[Insert product] | All versions prior to [Insert fixed version]
How the Exploit Works
The exploit occurs when a system attempts to select a PLMN from an SOR failed list. Due to a flaw in the system’s memory management, this process could trigger a corruption of memory. An attacker could exploit this vulnerability by sending specially crafted network requests, causing the system to select from the corrupted SOR failed list. This could then provide the attacker with unauthorized access to sensitive data or even full control over the system.
Conceptual Example Code
A potential scenario of exploiting this vulnerability could be by sending a malicious payload through a network request. Here’s a conceptual example of such a request:
POST /selectPLMN HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "SOR_failed_list": "malicious_memory_corruption_code_here" }By sending this request, an attacker could trigger the vulnerability, corrupt the memory, and gain unauthorized access.
Mitigation Guidance
The recommended mitigation for this vulnerability is to apply a patch from the vendor as soon as it becomes available. In the meantime, organizations can use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as temporary mitigation. It is crucial to keep these systems up to date and monitor them regularly to detect any suspicious activity.
