Ameeba Security Research

Defensive CVE and exploit intelligence

Ameeba Blog Search
TRENDING · 1 WEEK
Attack Vector
Vendor
Severity

CVE-2025-3854: Critical Buffer Overflow Vulnerability in H3C GR-3000AX

Views: 520

Overview

In the realm of cybersecurity, the discovery of vulnerabilities in widely used systems can have far-reaching and severe consequences. One such vulnerability, classified as critical, has been identified in H3C GR-3000AX up to version V100R006. This vulnerability, known as CVE-2025-3854, affects the EnableIpv6/UpdateWanModeMulti/UpdateIpv6Params/EditWlanMacList/Edit_List_SSID function of the aspForm file in the HTTP POST Request Handler component. The exploitation of this vulnerability could result in significant data leakage or even full system compromise. Given the severity of the potential outcomes, understanding and addressing this vulnerability is of the utmost importance.

Vulnerability Summary

CVE ID: CVE-2025-3854
Severity: Critical (CVSS: 8.0)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Ameeba Chat Icon Share secrets securely

Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.

Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.

  • • Encrypted identity
  • • Private Spaces for organizations and teams
  • • End-to-end encrypted chat, calls, files, and notes
  • • Sensitive AI work and protected collaboration
  • • Built for information that cannot leak

Our mission is to secure human work alongside AI.

Product | Affected Versions

H3C GR-3000AX | Up to V100R006

How the Exploit Works

The vulnerability is a buffer overflow that is triggered when an attacker manipulates the ‘param’ argument of the affected function within the HTTP POST Request Handler. This manipulation can lead to overflow of the buffer, causing undesired effects such as corrupting relevant memory and potentially allowing execution of arbitrary code.

Conceptual Example Code

In a hypothetical exploit scenario, an attacker might send a malicious HTTP POST request similar to the following:

POST /goform/aspForm HTTP/1.1
Host: vulnerable_device_IP_address
Content-Type: application/x-www-form-urlencoded
param=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

In the above example, “AAAAAAAA…” represents a long string of characters that exceeds the capacity of the ‘param’ buffer, triggering the overflow.

Mitigation

The vulnerability has been publicly disclosed and may be exploited. It is recommended to apply the vendor patch as soon as it’s available. Until then, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation solution. Regularly updating your systems and maintaining a robust cybersecurity posture can also help protect against such vulnerabilities.

Want to discuss this further? Join the Ameeba Cybersecurity Group Chat.

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.

More posts

Ameeba Chat