CVE-2024-23309Public exploitNetwork attack vector

Unauthenticated administrative access via client IP reuse

Published Oct 30, 2024 · Updated Oct 30, 2024

Authentication bypass in LevelOne WBR-6012 firmware R0.40e6 allows remote attackers to access the web interface without credentials. Protected request handlers compare CLIENT_IP only with the globally stored LOGGED_IP of the most recent successful login and require no session token. An attacker must assume that user's IP address; the demonstrated two-host sequence then grants access to all web pages and administrative functions.

CVSS severity9.0
Critical
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in LevelOne WBR-6012 firmware R0.40e6 allows remote attackers to access the web interface without credentials. Protected request handlers compare CLIENT_IP only with the globally stored LOGGED_IP of the most recent successful login and require no session token. An attacker must assume that user's IP address; the demonstrated two-host sequence then grants access to all web pages and administrative functions.

The record

CVE
CVE-2024-23309
Published
Oct 30, 2024
Updated
Oct 30, 2024
Vendor
LevelOne
Product
WBR-6012
Classifications
CWE-291, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 30, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=R0.40e6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LevelOne · WBR-6012version=R0.40e6

Published CVSS scores

9.0Cisco TalosCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-291Reliance on IP Address for Authentication
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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