Remote code execution via oversized PASS command
Published Jul 31, 2025 · Updated May 15, 2026
Stack-based buffer overflow in freeFTPd 1.0.10 and earlier allows remote attackers to execute arbitrary code via an oversized FTP PASS command. The FTP PASS handler copies an attacker-controlled password without validating its length, corrupting the FreeFTPDService.exe stack. An anonymous FTP account must be enabled; successful exploitation can execute code in the service process or crash the server.
Summary
What happened
Stack-based buffer overflow in freeFTPd 1.0.10 and earlier allows remote attackers to execute arbitrary code via an oversized FTP PASS command. The FTP PASS handler copies an attacker-controlled password without validating its length, corrupting the FreeFTPDService.exe stack. An anonymous FTP account must be enabled; successful exploitation can execute code in the service process or crash the server.
The record
- CVE
- CVE-2013-10042
- Published
- Jul 31, 2025
- Updated
- May 15, 2026
- Vendor
- freeFTPd
- Product
- freeFTPd
- Classifications
- CWE-121, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 31, 2025CVE publishedPublication date reported by the CVE source.
- May 15, 2026Record 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=0 <=1.0.10
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
- freeFTPd 1.0.10 PASS Remote Buffer Overflowfunctional · demonstrated
- freeFTPd PASS Command Buffer Overflow Metasploit modulefunctional · demonstrated
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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