CVE Daily

CVE-2025-7673

A buffer overflow vulnerability in the URL parser of the zhttpd web server in Zy...

Critical CVSS 9.8

Overview

A buffer overflow vulnerability in the URL parser of the zhttpd web server in Zyxel VMG8825-T50K firmware versions prior to V5.50(ABOM.5)C0 could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and potentially execute arbitrary code by sending a specially crafted HTTP request.

CWE: CWE-120 Published: 2025-07-16T07:15:24.437
Risk analysis

This vulnerability is rated 🔴 CRITICAL.

  • CVSS: 9.8 (CRITICAL)
  • Detected tags: buffer, dos, rce (tag impact: VERY HIGH)

Recommended actions:

  • Rate limiting, resource quotas and circuit breakers.
  • Patch/upgrade immediately (remote code execution).
  • Reduce exposure (WAF/segmentation), minimize attack surface.
  • Enforce authentication/authorization; reduce default endpoint exposure.

Recommended tools

Tags