CVE-2024-0548Public exploitNetwork attack vector

Unauthenticated service crash via crafted SIZE command

Published Jan 15, 2024 · Updated Aug 26, 2024

Denial of service in FreeFloat FTP Server 1.0 allows remote attackers to crash the FTP service through a crafted SIZE command. Public records identify the SIZE command handler but do not disclose the malformed input or precise operation that causes termination. No authentication or user interaction is required; network access to the FTP listener is sufficient to interrupt file-transfer availability.

CVSS severity7.5
High
EPSS probability1.34%
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 FreeFloat FTP Server 1.0 allows remote attackers to crash the FTP service through a crafted SIZE command. Public records identify the SIZE command handler but do not disclose the malformed input or precise operation that causes termination. No authentication or user interaction is required; network access to the FTP listener is sufficient to interrupt file-transfer availability.

The record

CVE
CVE-2024-0548
Published
Jan 15, 2024
Updated
Aug 26, 2024
Vendor
Freefloat AB
Product
Freefloat FTP Server
Classifications
CWE-404, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Freefloat AB · Freefloat FTP Serverversion=1.0

Published CVSS scores

5.3VulDBCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.0VulDBAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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-404CWE-404 Denial of Service
T1499.004Application or System Exploitation

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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