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How the CVE Works
CVE-2025-5049 is a critical buffer overflow vulnerability in FreeFloat FTP Server 1.0, specifically within the APPEND Command Handler. The flaw occurs due to insufficient bounds checking when processing overly long input strings in the APPEND command. An attacker can remotely exploit this by sending a crafted FTP command, triggering a stack-based buffer overflow. This allows arbitrary code execution under the context of the server process, potentially leading to full system compromise. The vulnerability is exploitable without authentication, making it highly dangerous for exposed systems.
DailyCVE Form
Platform: FreeFloat FTP Server
Version: 1.0
Vulnerability: Buffer Overflow
Severity: Critical
Date: 06/23/2025
Prediction: Patch expected by 07/15/2025
What Undercode Say
Analytics:
nmap -p 21 --script ftp-vuln-cve2025-5049 <target>
exploit = b"APPEND " + b"A" 1024 + b"\x90\x90\xeb\xfe"
How Exploit
- Craft malicious FTP APPEND command with oversized payload.
- Overflow triggers EIP overwrite, redirecting execution to shellcode.
Protection from this CVE
- Apply vendor patch immediately.
- Disable APPEND command if unused.
- Implement network segmentation.
Impact
- Remote code execution.
- Full system compromise.
- Unauthenticated attack vector.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
