D-Link DI-8100, Stack-Based Buffer Overflow, CVE-2025-7908 (Critical)

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How the CVE Works

The vulnerability in D-Link DI-8100 firmware version 1.0 resides in the `jhttpd` component, specifically within the `/ddns.asp?opt=add` file. The `sprintf` function mishandles the `mx` argument, leading to a stack-based buffer overflow. Attackers can exploit this flaw remotely by crafting a malicious request, overflowing the buffer to execute arbitrary code or crash the system. The exploit is publicly available, increasing the risk of active attacks.

DailyCVE Form

Platform: D-Link DI-8100
Version: 1.0
Vulnerability: Stack overflow
Severity: Critical
Date: 07/25/2025

Prediction: Patch by 08/15/2025

What Undercode Say

Analytics

curl -X GET "http://target/ddns.asp?opt=add&mx=<malicious_payload>"
payload = "A" 1024 Buffer overflow trigger

Exploit

  • Remote code execution via crafted `mx` parameter.
  • Public exploit available.

Protection from this CVE

  • Disable remote DDNS configuration.
  • Apply vendor patch upon release.

Impact

  • Full system compromise.
  • Unauthorized access.

Sources:

Reported By: nvd.nist.gov
Extra Source Hub:
Undercode

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