CVE-2024-56072Network attack vector

Daemon crash via uncapped sFlow sample counts

Published Dec 15, 2024 · Updated Dec 16, 2024

Denial of service in FastNetMon Community Edition 1.2.7 and earlier allows remote attackers to crash the daemon via a crafted sFlow v5 packet. The parse_sflow_v5_packet routine trusts the datagram sample count and reserves a samples_vector of that attacker-selected size; nested flow and counter record counts were likewise uncapped. Exploitation requires network access to the unauthenticated UDP sFlow listener and interrupts monitoring by crashing the daemon, without reported data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.69%
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 FastNetMon Community Edition 1.2.7 and earlier allows remote attackers to crash the daemon via a crafted sFlow v5 packet. The parse_sflow_v5_packet routine trusts the datagram sample count and reserves a samples_vector of that attacker-selected size; nested flow and counter record counts were likewise uncapped. Exploitation requires network access to the unauthenticated UDP sFlow listener and interrupts monitoring by crashing the daemon, without reported data disclosure or modification.

The record

CVE
CVE-2024-56072
Published
Dec 15, 2024
Updated
Dec 16, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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