CVE-2025-5110Public exploitNetwork attack vector

Unauthenticated code execution via oversized VERBOSE command

Published May 23, 2025 · Updated May 23, 2025

Buffer overflow in the VERBOSE command handler in FreeFloat FTP Server 1.0 allows remote attackers to execute arbitrary code. The handler copies an overly large unauthenticated FTP VERBOSE command into a fixed-size memory buffer without checking its length, overwriting adjacent process memory. Exposure requires a reachable FTP service, and exploitation can crash the server or run code in its process context without credentials or user interaction.

CVSS severity9.8
Critical
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in the VERBOSE command handler in FreeFloat FTP Server 1.0 allows remote attackers to execute arbitrary code. The handler copies an overly large unauthenticated FTP VERBOSE command into a fixed-size memory buffer without checking its length, overwriting adjacent process memory. Exposure requires a reachable FTP service, and exploitation can crash the server or run code in its process context without credentials or user interaction.

The record

CVE
CVE-2025-5110
Published
May 23, 2025
Updated
May 23, 2025
Vendor
Freefloat AB
Product
Freefloat FTP Server
Classifications
CWE-120, CWE-119, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 23, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 2025Record 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

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Freefloat AB · Freefloat FTP Serverversion=1.0

Published CVSS scores

7.3VulDBCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
6.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
9.8NVDCVSS:3.1/AV:N/AC:L/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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
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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