Unauthenticated memory corruption via oversized BINARY command
Published May 21, 2025 · Updated May 21, 2025
A buffer overflow in FreeFloat FTP Server 1.0 allows remote attackers to corrupt process memory via an oversized BINARY command. The BINARY command handler copies attacker-controlled command data into a fixed-size memory buffer without checking the input length. Successful exploitation crashes the service or redirects execution inside the server process without authentication or user interaction.
Summary
What happened
A buffer overflow in FreeFloat FTP Server 1.0 allows remote attackers to corrupt process memory via an oversized BINARY command. The BINARY command handler copies attacker-controlled command data into a fixed-size memory buffer without checking the input length. Successful exploitation crashes the service or redirects execution inside the server process without authentication or user interaction.
The record
- CVE
- CVE-2025-5051
- Published
- May 21, 2025
- Updated
- May 21, 2025
- Vendor
- Freefloat AB
- Product
- Freefloat FTP Server
- Classifications
- CWE-119, CWE-120, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 21, 2025CVE publishedPublication date reported by the CVE source.
- May 21, 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.
- Affected versionversion=1.0
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
- FreeFloat FTP Server BINARY command exploitproof of concept · unverified
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Technologies
Your stack
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Your stack
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