CVE-2024-51431Public exploit

Privileged router access via guessable embedded credentials

Published Nov 1, 2024 · Updated Nov 5, 2024

Hard-coded credentials in LB-LINK BL-WR1300H Firmware 1.0.4 allow remote attackers on an adjacent network to gain privileged access. The firmware image stores reusable root and admin password hashes in /etc/shadow, and both hashes resolve to the easily guessed password admin. An attacker must reach an authentication service on the router's local network; successful use exposes privileged router data and configuration, while the public record does not identify the service.

CVSS severity8.1
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded credentials in LB-LINK BL-WR1300H Firmware 1.0.4 allow remote attackers on an adjacent network to gain privileged access. The firmware image stores reusable root and admin password hashes in /etc/shadow, and both hashes resolve to the easily guessed password admin. An attacker must reach an authentication service on the router's local network; successful use exposes privileged router data and configuration, while the public record does not identify the service.

The record

CVE
CVE-2024-51431
Published
Nov 1, 2024
Updated
Nov 5, 2024
Vendor
LB-LINK
Product
BL-WR1300H Firmware
Classifications
CWE-798, T1078.001
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 5, 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=1.0.4

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

LB-LINK · BL-WR1300H Firmwareversion=1.0.4

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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.

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No observations available

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

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1078.001Valid Accounts: Default Accounts

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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