CVE-2025-7673

Published: Jul 16, 2025

Modified: Feb 26, 2026

PUBLISHED

CVSS v3.1

9.8

CRITICAL

Description

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.

Vendor	Product	Versions
Zyxel	VMG8825-T50K firmware	affected `< V5.50(ABOM.5)C0`

Weaknesses (CWE)

CWE-120

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

https://www.zyxel.com/service-provider/global/en/zyxel-security-advisory-remote-code-execution-and-denial-service-vulnerabilities-cpe

vendor-advisory

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CVE-2025-7673

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References