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CVE-2025-49480: Out-of-Bounds Access Vulnerability in ASR180x and ASR190x

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Overview

CVE-2025-49480 is a significant vulnerability associated with the ASR180x and ASR190x in lte-telephony. This out-of-bounds access flaw affects Falcon_Linux, Kestrel, and Lapwing_Linux, versions prior to v1536, potentially compromising system integrity or leading to data leakage. The severity of this vulnerability underscores the importance of prompt patch application and diligent system monitoring.

Vulnerability Summary

CVE ID: CVE-2025-49480
Severity: High (7.4 CVSS Score)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: System compromise, potential data leakage

Affected Products

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Product | Affected Versions

Falcon_Linux | Before v1536
Kestrel | Before v1536
Lapwing_Linux | Before v1536

How the Exploit Works

The vulnerability stems from an out-of-bounds access issue in the ASR180x and ASR190x software in lte-telephony. Specifically, the flaw is located within the apps/lzma/src/LzmaEnc.c file, where improper validation of user-supplied input leads to out-of-bounds read/write conditions. An attacker can exploit this vulnerability to execute arbitrary code within the context of the application, leading to system compromise or potential data leakage.

Conceptual Example Code

While no specific exploit code is available, a conceptual example might involve an attacker sending a network request with manipulated data designed to trigger the vulnerability. A hypothetical example might look like this:

POST /lte-telephony/ASR180x/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "manipulated_data": "long_string_that_triggers_out_of_bounds_access" }

This hypothetical request could cause the application to access data outside of its intended bounds, potentially leading to system compromise or data leakage.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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