CVE-2025-47812 — Wing FTP Server Improper Neutralization of Null Byte or NUL Character Vulnerability
Overview
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).
Vulnerability details
- CVE ID
- CVE-2025-47812
- Vulnerability
- Wing FTP Server Improper Neutralization of Null Byte or NUL Character Vulnerability
- Vendor
- Wing FTP Server
- Affected products
- Wing FTP Server: Wing FTP Server
- Severity
- HIGH
- Exploitation status
- Actively exploited in the wild (CISA KEV)
- Published
- 2025-07-14
Remediation guidance
CVE-2025-47812 is in CISA's Known Exploited Vulnerabilities (KEV) catalog — U.S. federal civilian agencies are required to remediate it under Binding Operational Directive 22-01. Treat it as a priority for every environment.
Apply the vendor's official security update for Wing FTP Server the affected product as soon as possible. Where a patch is unavailable, apply vendor mitigations or isolate/segment exposed systems.
Hunt for indicators of compromise tied to this vulnerability and confirm logging/EDR coverage on affected assets.
Authoritative references
Remediate CVE-2025-47812 — and stay ahead of the next one
CVE-2025-47812 is listed in the CISA KEV catalog as actively exploited — treat remediation as urgent. Scan your domain free to see whether CVE-2025-47812 and other Wing FTP Server issues affect you and get a prioritized remediation report (full report from ₹999) — or stream the full feed of 1,600+ actively-exploited CVEs straight into your SOC.
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