CVE-2025-47812

Wing FTP Server Improper Neutralization of Null Byte or NUL Character Vulnerability

n/a

CVSS

95.3%

EPSS (exploit prob.)

99.9%

EPSS percentile

Yes

Actively exploited

Ransomware use

2025-07-14

Added

MITRE ATT&CK techniques

How this vulnerability maps to adversary behaviour, from the Center for Threat-Informed Defense's public CVE→ATT&CK mappings. Use it to check whether your detections already cover the technique.

Technique	Name	Relationship
T1068	Exploitation for Privilege Escalation	exploitation technique
T1059	Command and Scripting Interpreter	primary impact

Summary

Wing FTP Server contains an improper neutralization of null byte or NUL character vulnerability that can allow 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).

Affected software

Vendor: Wing FTP Server · Product: Wing FTP Server

Weakness types (CWE):

What to do

This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.

Related vulnerabilities in Wing FTP Server

CVE	Name	EPSS	Exploited
CVE-2025-47813	Wing FTP Server Information Disclosure Vulnerability	56.4%	Yes

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