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CVE-2025-48905: Wasm Exception Capture Vulnerability in Arkweb v8 Module

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Overview

The cybersecurity landscape is constantly evolving, and new threats emerge every day. One such threat that has been recently identified is the CVE-2025-48905 vulnerability. This vulnerability lies in the arkweb v8 module and relates to the failure to capture specific Wasm exception types. It could potentially result in a system being compromised or data being leaked if it’s successfully exploited.
This vulnerability is of significant importance as it affects a broad range of systems and applications that are built using or include the Arkweb v8 module. It can potentially impact both individual users and enterprises, and depending on the nature of the data or system compromised, the consequences could be severe.

Vulnerability Summary

CVE ID: CVE-2025-48905
Severity: High (8.1 CVSS Score)
Attack Vector: Network
Privileges Required: Low
User Interaction: Required
Impact: Potential system compromise or data leakage

Affected Products

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Product | Affected Versions

Arkweb | v8 and below

How the Exploit Works

The exploit takes advantage of a specific weakness in the Arkweb v8 module’s handling of Wasm exceptions. A malicious actor can craft a specific Wasm exception type that the Arkweb v8 module fails to capture correctly. When such an exception is not caught, it can lead to unexpected behavior, including memory corruption, system instability, or even a system crash.
If the attacker is able to trigger such an exception in a strategic location within the system, they might be able to take advantage of the resulting instability to execute arbitrary code, perform unauthorized actions, or gain access to sensitive data.

Conceptual Example Code

The following is a conceptual example of how this vulnerability might be exploited. This is a sample shell command that triggers a specific Wasm exception type:

$ wasm-exception --type "uncatchable" --target "http://target.example.com/arkweb/v8"

In this example, `wasm-exception` is a hypothetical tool that can generate and send Wasm exceptions, `–type “uncatchable”` generates a specific type of Wasm exception that Arkweb v8 module fails to capture, and `–target` specifies the target system or application.

Mitigation Guidance

Users and administrators of affected systems are advised to apply the vendor patch as soon as it becomes available. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) may offer temporary mitigation by blocking attempts to exploit this vulnerability.

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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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