CVE-2026-7255 — The Web Management Interface Of Zyxel WRE6505 Vulnerability
CVE-2026-7255 — ** UNSUPPORTED WHEN ASSIGNED ** An improper restriction of excessive authentication attempts vulnerability in the web management interface of Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 could allow an adjacent attacker on the LAN to brute-force the password and bypass authentic
What This Means For You
- If your environment is affected by CWE-307, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-7255 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-7255 - Zyxel WRE6505 Web Management Brute Force Attempts
title: CVE-2026-7255 - Zyxel WRE6505 Web Management Brute Force Attempts
id: scw-2026-05-12-ai-1
status: experimental
level: high
description: |
Detects multiple failed authentication attempts (HTTP 401 or 403 status codes) originating from an adjacent network IP address (assuming a common LAN subnet) targeting the Zyxel WRE6505 web management interface. This is indicative of an attacker attempting to brute-force credentials as described in CVE-2026-7255.
author: SCW Feed Engine (AI-generated)
date: 2026-05-12
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-7255/
tags:
- attack.credential_access
- attack.t1110
logsource:
category: authentication
detection:
selection:
src_ip:
- '192.168.1.0/24'
sc-status:
- '401'
- '403'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-7255 | vulnerability | CVE-2026-7255 |
| CWE-307 | weakness | CWE-307 |
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 12, 2026 at 07:16 UTC |
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