CVE-2025-47813 Wing FTP Server Wing FTP Server: information leak
In plain words: The program reveals information it should keep private. Leaked secrets — tokens, passwords or memory contents — that help a bigger attack.
Confirmed exploited by CISA on · US federal patch deadline Mar 30, 2026
What to do
- Install Wing FTP Server's security update for Wing FTP Server. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- Wing FTP Server Information Disclosure Vulnerability
- Product
- Wing FTP Server Wing FTP Server
- CISA description
- Wing FTP Server contains a generation of error message containing sensitive information vulnerability when using a long value in the UID cookie.
- Type of flaw
- Information leak (CWE-209)
- Confirmed exploited
- Mar 16, 2026
- US federal patch deadline
- Mar 30, 2026
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Answering about CVE-2025-47813 ·
Questions about CVE-2025-47813
Is CVE-2025-47813 being exploited?
Yes. CISA added CVE-2025-47813 to its Known Exploited Vulnerabilities catalog on Mar 16, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2025-47813?
Install Wing FTP Server's security update for Wing FTP Server. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2025-47813?
Only if you use Wing FTP Server Wing FTP Server. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.