Overview
The CVE-2025-57637 vulnerability was identified in the D-Link DI-7100G’s jhttpd service, specifically in the sub_451754 function of the viav4 parameter. This buffer overflow vulnerability can be exploited by attackers to cause a denial of service or execute arbitrary code, potentially leading to system compromise or data leakage. It is, therefore, critical for users of this product to understand the implications of this vulnerability and take the necessary mitigation steps.
Vulnerability Summary
CVE ID: CVE-2025-57637
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Denial of Service, Execution of Arbitrary Code, Potential System Compromise, Data Leakage
Affected Products
A new way to communicate
Ameeba Chat is built on encrypted identity, not personal profiles.
Message, call, share files, and coordinate with identities kept separate.
- • Encrypted identity
- • Ameeba Chat authenticates access
- • Aliases and categories
- • End-to-end encrypted chat, calls, and files
- • Secure notes for sensitive information
Private communication, rethought.
Product | Affected Versions
D-Link DI-7100G | 2020-02-21
How the Exploit Works
The exploit takes advantage of a buffer overflow vulnerability in the sub_451754 function of the jhttpd service’s viav4 parameter. By sending crafted network packets that exceed the buffer’s memory allocation, an attacker can cause the system to overflow. This overflow can lead to a denial of service, or worse, provide the attacker with the ability to execute arbitrary code on the system.
Conceptual Example Code
The following is a simplified, conceptual example of how the vulnerability might be exploited.
POST /sub_451754 HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
viav4=<buffer_overflow_data>In this example, `