CVE-2026-7256
Received Received - Intake
Command Injection in Zyxel WRE6505 v2 Firmware

Publication date: 2026-05-12

Last updated on: 2026-05-12

Assigner: Zyxel Corporation

Description
** UNSUPPORTED WHEN ASSIGNED ** A command injection vulnerability in the CGI program of Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 could allow an adjacent attacker on the LAN to execute operating system (OS) commands on a vulnerable device by sending a crafted HTTP request.
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Meta Information
Published
2026-05-12
Last Modified
2026-05-12
Generated
2026-06-21
AI Q&A
2026-05-12
EPSS Evaluated
2026-06-20
NVD
CVE-2026-7256
EUVD
EUVD-2026-29376
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
zyxel wre6505 v1.00_abdv.3_c0
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
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Mitigation Strategies

The vulnerability affects Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 and allows an adjacent attacker on the LAN to execute OS commands via a crafted HTTP request.

Since the vulnerability is in an unsupported firmware version, and no patches or updates are mentioned, the immediate mitigation step is to plan migration to a newer supported product or firmware version.

It is recommended to restrict LAN access to the device to trusted users only and monitor network traffic for suspicious HTTP requests that could exploit this vulnerability.

Executive Summary

This vulnerability is a command injection flaw found in the CGI program of Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0. It allows an attacker who is on the same local area network (LAN) to execute arbitrary operating system commands on the affected device by sending a specially crafted HTTP request.

Impact Analysis

An attacker exploiting this vulnerability can execute arbitrary OS commands on the vulnerable device without any privileges or user interaction. This can lead to full compromise of the device, including unauthorized access, data theft, disruption of services, or further attacks on the network.

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