CVE-2024-51406Public exploit

Network denial of service via forged LLDP links

Published Nov 1, 2024 · Updated Nov 4, 2024

Denial of service in Project Floodlight Floodlight 1.2 allows local users to disrupt inter-switch connectivity with forged LLDP packets. The topology update logic accepts a forged external link within an independent cluster, then ignores updates from other clusters because cluster merging does not recognize that the link is internal. A host on the managed network must first create independent switch clusters and inject crafted LLDP or BDDP frames; affected hosts then lose cross-switch connectivity.

CVSS severity6.2
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Project Floodlight Floodlight 1.2 allows local users to disrupt inter-switch connectivity with forged LLDP packets. The topology update logic accepts a forged external link within an independent cluster, then ignores updates from other clusters because cluster merging does not recognize that the link is internal. A host on the managed network must first create independent switch clusters and inject crafted LLDP or BDDP frames; affected hosts then lose cross-switch connectivity.

The record

CVE
CVE-2024-51406
Published
Nov 1, 2024
Updated
Nov 4, 2024
Vendor
Project Floodlight
Product
Floodlight
Classifications
CWE-290
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 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=1.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Project Floodlight · Floodlightversion=1.2

Published CVSS scores

6.2CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing

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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