Wing FTP Server - RCE (CVE-2025-47812)
563Exploiting IPs reported
In Wing FTP Server before 7.4.4. the user and admin web interfaces mishandle '\0' bytes, ultimately allowing injection of arbitrary Lua code into user session files. This can be used to execute arbitrary system commands with the privileges of the FTP service (root or SYSTEM by default). This is thus a remote code execution vulnerability that guarantees a total server compromise. This is also exploitable via anonymous FTP accounts.
CrowdSec analysis
CVE-2025-47812 is a critical remote code execution vulnerability in Wing FTP Server prior to version 7.4.4, where improper handling of null bytes in the web interfaces allows attackers to inject arbitrary Lua code into session files. Exploitation of this flaw can lead to execution of system commands with root or SYSTEM privileges, resulting in complete server compromise, and can even be triggered via anonymous FTP accounts.
CrowdSec has been tracking this vulnerability and its exploits since 16th of July 2025.
CrowdSec network data shows that most actors exploiting CVE-2025-47812 rely on broad, untargeted scans with minimal filtering. The activity is largely automated and opportunistic in nature. CrowdSec data also reveals a clear uptick in attacks involving CVE-2025-47812 over the past week. Activity is above the usual baseline, suggesting growing attention from attackers. This may reflect rising awareness, recent exploit releases, or expanded targeting efforts.
Attackers exploit this vulnerability by sending a POST request to /loginok.html with a maliciously crafted username, enabling remote code execution on vulnerable Wing FTP Server instances.
Exploitation
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Protection
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Blocklist
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