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CVE-2025-25735: Lack of SPI Protected Range Registers in Kapsch TrafficCom RSUs

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Overview

The CVE-2025-25735 vulnerability affects the Kapsch TrafficCom RIS-9160 & RIS-9260 Roadside Units (RSUs). This vulnerability allows attackers to modify SPI flash in real-time and potentially compromise the system or leak data. It’s a significant security concern for organizations using these RSUs and requires immediate attention.

Vulnerability Summary

CVE ID: CVE-2025-25735
Severity: High (7.5 CVSS Score)
Attack Vector: Local Access
Privileges Required: Low level
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

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Product | Affected Versions

Kapsch TrafficCom RIS-9160 | v3.2.0.829.23, v3.8.0.1119.42, v4.6.0.1211.28
Kapsch TrafficCom RIS-9260 | v3.2.0.829.23, v3.8.0.1119.42, v4.6.0.1211.28

How the Exploit Works

The vulnerability stems from the lack of SPI Protected Range Registers (PRRs) in the mentioned versions of the RSUs. This omission allows attackers with low-level privileges and local access to manipulate the SPI flash memory in real-time. This could lead to unauthorized changes in system behavior or data leaks.

Conceptual Example Code

Here is a conceptual pseudo-code example illustrating how an attacker might exploit this vulnerability:

def exploit(target_system):
# Obtain low-level privileges on the target system
low_privileges = obtain_low_privileges(target_system)
if low_privileges:
# Access the SPI flash memory
spi_flash = access_spi_flash(target_system)
# Modify the SPI flash memory in real-time
spi_flash.modify("malicious_changes")
else:
print("Failed to obtain necessary privileges.")

This pseudo-code is for illustrative purposes only. In real-world scenarios, detailed knowledge of the system and the exploit would be necessary.

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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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