Risk Letters

Exploited vulnerability

CVE-2025-47812

TLP:CLEAR

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

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).

Facts

  • Vendor: Wing FTP Server
  • Product: Wing FTP Server
  • CVSS: 10
  • EPSS (probability of exploitation within 30 days): 93.9 %
  • On CISA's Known Exploited Vulnerabilities list since: 14 July 2025
  • First known exploitation: 14 July 2025
  • CISA's deadline for US federal agencies: 4 August 2025
  • Weakness: CWE-158
  • First seen by Risk Letters: 14 July 2025

Members see which Nordic sectors the flaw hits, and what to do about it.

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD