Zyxel NWA1100-N Buffer Overflow Vulnerability Leading to Denial-of-Service

Vulnerability

A buffer overflow vulnerability has been identified in the "webs" binary of Zyxel NWA1100-N customized firmware version 1.00(AACE.1)C0. The vulnerability arises in the formWep(), formWlAc(), formPasswordSetup(), formUpgradeCert(), and formDelcert() functions. An attacker could exploit this vulnerability to trigger a denial-of-service condition by sending a crafted HTTP request to a vulnerable device.

Impact

Exploitation of this vulnerability can lead to a denial-of-service condition, causing the device to become unresponsive or unavailable.

Added: May 12, 2026, 4:19 AM
Updated: May 12, 2026, 4:19 AM

Vulnerability Rating

Custom Algorithm
spread
2.6
impact
2.5
exploitability
7.8
remediation
0.0
relevance
7.9
threat
0.0
urgency
2.9
incentive
8.3

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.