PT-2025-29711 · Zyxel · Vmg8825-T50K Firmware

Published 2025-07-16 · Updated 2025-07-16 · CVE-2025-7673

Mitre

CVSS v3.1

9.8

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2025-7673

Affected Products

Vmg8825-T50K Firmware

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2025-7673 · Security Note
• https://zyxel.com/service-provider/global/en/zyxel-security-advisory-remote-code-execution-and-denial-service-vulnerabilities-cpe · Vendor Advisory
• https://twitter.com/CVEnew/status/1945389099374010866 · Twitter Post